user_prompt: ## Instruction:
  You enter a room that contains two buttons on the left side: one is the left button, and one is the right button, located near the shield wall that blocks access to a white wall on the left side. A ditch prevents direct access to this white wall. 
  
  Straight across from the entrance door, there are two small platforms that can be modified in height by activating two different big buttons. The first platform on the left is lowered by the roof button, which is located on an elevated zone in the top left. The second platform is elevated by the wall button, which is on the right side above the blue beam source. 
  
  Above these platforms, there is another elevated zone that contains the exit door and a cube slot, which opens the exit door. This elevated zone also has a section of white wall. 
  
  The elevated zone on the left, which has the roof button, features a white wall section on the floor underneath the roof button. 
  
  Near the entrance, the two buttons have the following effects: the left button triggers the cube machine to drop a cube, while the right button temporarily deactivates the shield wall for a few tens of seconds.
  
  Select the correct options for each blank. Only output option letters one by one, with the format '{Option 1}{Option 2}{Option 3}{Option 4}{Option 5}, such as 'ABCDE'
  Step 1: Enter the room. There are two small buttons, one on the left and one on the right, close to the wall.
  Step 2: ________
  Step 3: ________
  Step 4: Join the blue beam right when the cube passes you so that you are close to the cube and facing the end of the beam that carries you.
  Step 5: ________
  Step 6: Get carried by the beam source into the orange portal and exit through the blue portal up high, hovering towards the zone with the roof button alongside the cube.
  Step 7: Exit the blue beam when you reach the high up zone. Shoot a blue portal into the white wall on the ground below the button and place the cube into the blue beam emerging from the portal, pressing the button.
  Step 8: This lowers the left platform to ground level. Go down and step onto the lowered platform.
  Step 9: Turn left and shoot an orange portal onto the white wall above where the blue beam hits the wall. This will send the cube through the orange portal into the beam. When the cube reaches the beam directly from the source, shoot a blue portal where the blue beam hits the wall, redirecting it towards the wall button, making the cube hover towards the button after passing through both portals.
  Step 10: ________
  Step 11: On the last elevated zone before the exit door, go to the end of the hallway and shoot an orange portal into the white wall piece. This removes the blue beam pressing the cube against the wall button, causing the cube to drop into the lower beam.
  Step 12: ________
  Step 13: Take the cube and place it on the cube slot to open the exit door. Problem solved.
  
  Please select from the following candidate choices. Your response should end with "The final answer is [answer]." where the [answer] is the choice of options. 
  A. While the cube hovers towards the wall button, and after the first platform rises again to mid-level, walk onto the second platform while it is still at mid-level. Once the cube activates the button, the second platform rises to the top. Exit the platform once it reaches the highest level.
  B. The cube then hovers through the blue portal and emerges from the orange portal in the zone where you stand.
  C. Walk through the open exit door. Problem solved.
  D. Look up and shoot a blue portal into the white wall vertically above where the blue beam hits the wall. Do this when you reach the original blue beam coming from the source and entering the orange portal.
  E. Shoot a blue portal on the wall above the entrance and an orange portal on the floor.
  F. Press the left button to drop a cube. Press the right button to temporarily deactivate the shield wall in front of you. Quickly shoot a blue portal in the center of the wall behind the deactivated shield wall to let the beam carry over the cube to your position.
  G. While the cube hovers towards the wall button, the first platform rises again up to mid-level. Wait on the first platform until after the cube activates the wall button, letting the second platform rise to the top. Exit the platform once it reaches the highest level.
  H. Look up and shoot a blue portal into the white wall vertically above where the blue beam hits the wall. Do this before you reach the original blue beam coming from the source and entering the orange portal.
  I. Shoot an orange portal on the left at the wall where the blue beam touches the wall.
  J. Press the right button to temporarily deactivate the shield wall in front of you. Shoot a blue portal in the center of the wall behind the deactivated shield wall. Press the left button to drop a cube into the blue beam, which carries it over to your position.