user
You ponder me in your mind,  I grow stronger with time  And weaker all the while.   I drive you crazy  In your mind that's hazy.   I'm a magnet to thought  And a shade to your eyes,  Now what am I?
A: drives
B: sound
C: riddle or question
D: double
E: state
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

C

<|end_of_solution|>