Ans 2: (Master Answer)
B
As we know, opposite poles of magnets attract each other. Then the possible combinations can be :
Either,
P - North, Q - South, R - North, S - South, T - North, U - South, V - North, W - South
Or,
P - South, Q - North, R - South, S - North, T - South, U - North, V - South, W - North
Lets say if Q is S - South. Then, the only possible option is (B).