user
I'm tall when I'm young, I'm short when I'm old.  What am I?
A: candle  pencil
B: expression
C: heifer
D: article
E: kettle
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>