user
What passes un der the sun, but makes no shadow ?   (There are many answers to this riddle)
A: air   wind   planets
B: alpha centauri
C: character
D: supernova
E: earths
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>