user
My timpani play a rhythmic song,  With hammer on anvil I play along.   Down my canal no ship sets course,  And I have a stirrup that fits no horse.   What am I?
A: obviously             ear
B: general
C: dogs
D: percussion instrument
E: product
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>