Coils P and Q Each Have a Large Number of Turns

Coils P and Q each have a large number of turns of insulated wire.When switch S is closed, the pointer of galvanometer G is deflected toward the left.Now that S is closed, to make the pointer of G deflect toward the right one could:

A) move the slide of the rheostat R quickly to the right
B) move coil P toward coil Q
C) move coil Q toward coil P
D) open S
E) do none of the above