The Primary Winding of a Transformer Is Between Points B

The primary winding of a transformer is between points B and N, and has 120 volts applied to it. There are 120 turns of wire between points B and N. The selector switch is set to point D, and the load is now connected between points D and N. The secondary of this transformer contains 40 turns of wire. Assume that the load connected to the secondary has an impedance of 10 ohm. The amount of current flow in the secondary circuit is ____ amps.

A) 0.25
B) 3
C) 4
D) 9