Instructions  Given below is a pair of events I and II. You have to decide their
nature of relationship. Assume that the given information is correct and final.

I Prices of toys in the market have gone down
II Government has reduced import duty on toys.
(A) I is the main cause and II is the main effect
(B) I is effect but II is not the main cause
(C) II is the main cause and I is the main effect 
(D) II is an effect but I is not the main cause.