Assertion: A spring has potential energy , both when it is compressed or stretched.
Reason: In compressing or stretching, work is done on the spring against the restoring force.

Options

A. both assertion reason are true and reason is the correct explanation of the assertion.
B. both assertion reason are correct and reason is not the correct explanation of the assertion.
C. Assertion is correct but reason is incorrect
D. Assertion is incorrect but reason is correct

Answer

A