Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order. Only three boxes are kept above G. Only one box is kept between F and G. Only three boxes are kept between F and B. B is kept in some place above G. E is kept immediately below B. A is kept in one of the places above D. C is not kept immediately above or below F. How many boxes are kept below A?​

Given:

Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order.

Only three boxes are kept above G.

Only one box is kept between F and G.

Only three boxes are kept between F and B.

B is kept in some place above G.

E is kept immediately below B.

A is kept in one of the places above D.

C is not kept immediately above or below F.

So, two boxes are kept below A.

Thus, correct option is (a).