user
you are in a  room with no windows no door and no funiture .  you dont have any tools either.  it was just an empty square room. and yet you manage to get out how?
A: opportunity
B: entering
C: through the doorway
D: square shape
E: lines
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

C

<|end_of_solution|>