user
some can be stupid some can be good some can be challenging and some can be impossible What is it ?  Hint* look at the title look where it says
A: riddles
B: statement
C: merchandise
D: reply
E: headline
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>