user
You can use 2 coins to make 30 cents, 1 is not a nickel, what are the 2 coins. 
A: quarter and nickle
B: silver dollar
C: coin purse
D: measure
E: vending machines
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>