user
What does everybody know about but nobody has seen, some say they are real some say they are not?
A: japanese story
B: deal
C: aliens
D: wonderland
E: character
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

C

<|end_of_solution|>