user_prompt: ## Instruction:
  You enter a large hall. Zone 1 is the entry area where you start. 
  
  Turning to the left, there is a niche high up in the corner. On the right side (from the entrance view), there is a skewed white wall area that looks like something could jump out of it. 
  
  To the left, Zone 2 is visible but not directly reachable by walking. Zone 2 contains a button connected to the exit door. From Zone 2, one can walk through a shield wall to Zone 3, which is located on the opposite side of Zone 1 in the same central hall (though it is not possible to walk directly across). 
  
  Zone 3 features a laser teleportation machine, a regular cube, and an area where a laser source shoots across the room into a wall on the opposite side (near Zone 2). 
  
  Zone 3 is connected to Zone 4 via another shield wall. Zone 4 contains a mirror cube machine with a switch that activates it, as well as a laser teleportation machine linked to the same laser source in Zone 3. 
  
  The laser teleportation machine can teleport any object (e.g., a cube or ball) placed in its designated area to the end of the laser ray. By changing, stopping, or redirecting the laser, the destination of the teleport can be controlled.
  
  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 into zone 1.
  Step 2: Turn left and up and shoot a blue portal at the white roof in the niche high up.
  Step 3: Shoot an orange portal into the wall next to where you stand and go through the portal to land in the niche.
  Step 4: ________
  Step 5: Jump down to the floor where you came from before and shoot an orange portal before landing to get ejected from the skewed blue portal into zone 2.
  Step 6: Walk through the shield wall and go to zone 3.
  Step 7: ________
  Step 8: ________
  Step 9: Go to zone 3, pick the cube, and place it on the ground such that it blocks the laser mid-way in the air (i.e., the laser does not go all the way to the wall across).
  Step 10: Go to zone 4 and activate the teleportation machine.
  Step 11: Go to zone 3 and adjust the mirror cube to make a neat 90-degree angle with the laser, pointing at the wall next to the entrance door of zone 1.
  Step 12: ________
  Step 13: ________
  Step 14: Walk to zone 2 and go through the opened 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 through the shield wall to zone 4 and press the switch to drop the mirror cube.
  B. Place the mirror cube in the teleportation machine in zone 3 and activate the machine. This will send the cube to the roof and cause it to fall down. While it falls, shoot an orange portal on the skewed white wall (currently on the left side) such that the cube is ejected over to zone 2, landing directly on the button.
  C. Shoot a blue portal into the skewed white wall piece on the right side, mid-height of the center room in zone 1.
  D. Walk into the right room. Shoot an orange portal onto the wall inside the right room.
  E. Place the regular cube in the teleportation machine in zone 3 and activate the machine. This will send the cube to the roof and cause it to fall down. While it falls, shoot an orange portal on the skewed white wall (currently on the left side) such that the cube is ejected over to zone 2, landing directly on the button.
  F. Shoot an orange portal to where the laser hits the wall and a blue portal on the floor in zone 3.
  G. Shoot an orange portal to where the laser hits the wall and a blue portal on the floor in zone 1.
  H. Place the mirror cube on the teleportation machine in zone 4.
  I. Shoot a blue portal where the laser source hits the wall. Shoot an orange portal at the southernmost white wall piece (ground level) on the west wall. Step onto platform 1.
  J. Use the cube to redirect the laser to the laser slot in the left room. This deactivates the shield wall.