The potential energy of a system increased if work is done
A. upon the system by nonconservative force
B. by the system against a conservative force
C. by the system against a nonconservative force
D. upon the system by a conservative force

The potential energy of a system increased if work is done
A. by the system against a conservative force
B. by the system against a non conservative force
C. upon the system by a conservative force
D. upon the system by a non conservative force

The potential energy of a system increased if work is done
A. by the system against a conservative force
B. by the system against a nonconservative force
C. upon the system by a conservative force
D. upon the system by a nonconservative force