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

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true, but R is not the correct explanation of A

C. A is true, but R is false

D. A is false, but R is true

Answer: Option A