A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when
A.
the magnet is moved away from the stationary solenoid
B.
the solenoid is moved away from the stationary magnet
C.
the magnet is moved towards the stationary solenoid
D.
there is no relative motion between the magnet and the solenoid
