user_prompt: ## Instruction:
  You enter Room 1, which also contains the exit door on the left.
  
  There is a large Room 2, connected to Room 1 by a door shielded with a blue shield wall. This shield wall does not allow portals to be shot through, but it can be walked through. However, any existing portals vanish when touching the shield. In Room 1, there is an elevated platform in the center with a button that deactivates the shield wall to Room 2 as long as it is pressed.
  
  Room 2 contains another elevated platform with a button that activates an orange (pull) gravitation beam in Room 2 as long as it is pressed.
  
  Additionally, Room 2 has a button on the ground floor that activates a laser as long as it is pressed.
  
  The goal is to open the exit door in Room 1, which is connected to a laser slot inside Room 1.
  
  Below is a candidate solution:
  Step 1: Go to Room 2 and step on the elevated button to activate the gravitation beam.
  Step 2: Shoot an orange portal beneath the beam and a blue portal on the white wall to the right so that the cube in Room 2 is pulled over the water.
  Step 3: Let the cube be sucked through the portal, then shoot a new blue portal on the left wall.
  Step 4: Step off the button to deactivate the beam, which lets the cube drop through the blue portal onto the floor.
  Step 5: Place the cube on the white piece of ground in front of the door leading to Room 1.
  Step 6: Go to Room 1 and shoot a blue portal in the roof directly above the elevated button.
  Step 7: Shoot an orange portal underneath the cube in Room 2 and then step on the elevated button.
  Step 8: Catch the cube as it falls from the blue portal and place it on the button in Room 1. Now a critical portal connection between the two rooms is established.
  Step 9: Go to Room 2, as the shield wall is down and allows you to pass without destroying the portal.
  Step 10: In Room 2, shoot an orange portal underneath the gravitation beam machine.
  Step 11: Step on the elevated button in Room 2.
  Step 12: Once the cube is pulled through the beam to the roof of Room 2, shoot an orange portal on the left wall in Room 2, opposite the still-deactivated laser source.
  Step 13: The cube falls down; place it on the button on the ground floor in Room 2.
  Step 14: Go through the orange portal back to Room 1.
  Step 15: Shoot a blue portal onto the wall opposite the laser slot in Room 1.
  Step 16: This opens the exit door. Go through it. Problem solved.
  
  Please choose from the following options. Your response should end with "The final answer is [answer]." where the [answer] is the choice of A or B.
  A. Correct
  B. InCorrect