user
There is a thief in a jail cell, wanting to get out.    There are no windows, hole or cracks in the walls, he doesn't have any tools, and the door to the jail cell is 3 inches thick.  But still the criminal manages to get out.  How does he do this?
A: door isnt locked
B: rivet
C: jail cell
D: test
E: blue wall of silence
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>