user
I always point in the right direction.  My instructions are written in black and white.  Disobey me and pay the consequences.  I will never say more than two words at a time.  What am I?
A: expression
B: presentation
C: print
D: one way sign
E: crosswalk
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>