When the work done in moving a particle round a closed loop in a field is zero, the forces in the field are called

When the work done in moving a particle round a closed loop in a field

1.	When the work done in moving a particle round a closed loop in a field is zero, the forces in the field are called
A.	Zero forces
B.	Non-Conservative forces
C.	Conservative forces
D.	Viscous forces
Answer» D. Viscous forces