user_prompt: ## Instruction:
  You enter room 1, which is connected to room 2 on the right, separated by a shield wall. Room 1 contains a button on the floor that activates a stair leading up to a platform. On this platform, there is a switch that controls a mirror cube machine located in room 2. 
  
  Room 2 features a laser source that hits the wall and a laser teleportation machine. When activated by a button press, this teleportation machine sends any object placed on it (such as a cube) to the endpoint of the laser ray, wherever the laser is directed. This allows cubes to travel through shield walls that would otherwise block movement. However, teleportation does not work through solid walls. Room 2 also has a button that activates a cube machine located next to the teleportation device. 
  
  Room 3 is separated from room 1 by a shield wall and contains a button that opens the door to room 4. Room 4 is a small area with only a button on the floor, which opens the exit door.
  
  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: Go to room 2 (on the right) and press the switch to drop a cube.
  Step 2: Shoot a blue portal where the laser hits the wall and one on the wall that points to the central room (room 1).
  Step 3: Place the cube on the laser teleportation machine and press the switch to send the cube via laser to room 1.
  Step 4: Go to room 1 and place the cube on the button.
  Step 5: ________
  Step 6: Pick up the mirror cube and place it in front of the laser source such that the laser points towards room 3.
  Step 7: ________
  Step 8: ________
  Step 9: Pick up the mirror cube and place it on the teleportation device.
  Step 10: ________
  Step 11: ________
  Step 12: Go to room 3, pick one cube, and place it on the button to open the door to room 4. Take the other cube and bring it to room 4, placing it on the button on the floor to open the exit door.
  Step 13: Go through 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. Go to room 2 and collect the mirror cube who dropped due to the button press in room 1.
  B. Shoot an orange portal where the laser source hits the wall and a blue portal at the wall of the entrance in room 1, such that the laser points to room 3.
  C. Shoot a blue portal on the white area of the roof, and an orange portal on the white area on the floor beneath it. Make sure the portals are aligned.
  D. Shoot an orange portal on the white wall on the left (Zone 1) and a blue portal up on the white wall on the right over the water (Zone 2).
  E. Shoot an orange portal where the laser source hits the wall and a blue portal at the wall next to the teleportation device to direct the laser to the mirror cube which needs to point to room 3.
  F. Place the new cube on the laser teleportation machine and press the button to send the cube.
  G. Activate the teleportation machine by pressing the button next to the machine.
  H. Shoot a blue portal where the blue path hits the wall on the elevated platform to the left (from the entrance). Shoot an orange portal on the side of the pillar facing the side room.
  I. Walk up the stairs to press the little button, which drops a mirror cube in room 1.
  J. Create a new cube by pressing the little button in room 2.