user
i hang high, im long, i live in a box, and i help people see clearly.  what am i?
A: happening
B: floorescent light
C: genius
D: cover
E: belt
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

B

<|end_of_solution|>