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


A. Assertion is correct, reason is correct; reason is a correct explanation for assertion.
B. Assertion is correct, reason is correct; reason is not a correct explanation for assertion
C. Assertion is correct, reason is incorrect.
D. Assertion is incorrect, reason is correct.