user
It is the time in your life when you simultaneously know everything and nothing at an instance
A: hearthstone
B: tango
C: old enough
D: property
E: teenager
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

E

<|end_of_solution|>