The potential energy of a system increases, if work is done

Options

A. upon the system by a conservative force
B. by the system against a conservative force
C. upon the system against a non-conservative force
D. upon the system by a non-conservative force

Answer

B

Explanation

Let potential energy be U.
Work done by the conservative force `=-DeltaU`
For `DeltaUgt0`, work done `lt0`
So, if work is done against conservative force potential energy U would be increased.