user
a guy was using the bathroom behind a few bars, but when he was done he couldn't get out.  why couldn't he get out?
A: gin
B: stall
C: rotor
D: he was in jail
E: oyster bar
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>