user
What is as light as a feather but impossible to hold for 20 minutes?
A: skylight
B: hydrogen
C: dish
D: you breath
E: wrestling
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>