user
what is in the bathroom somtimes big somtimes small water shoots around in it
A: plankton
B: senior
C: watermelon
D: creek
E: toilet
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

E

<|end_of_solution|>