Which of the following box is kept immediate above box G?

Study the following information carefully and answer the question given below: Eight boxes A, B, C, D, E, F, G and H are kept one above the other on different shelves whereas the bottommost shelf is numbered as one and the topmost shelf is numbered as eight. All the boxes are not necessarily in the same order. Box H is kept on shelf four and immediately below box
A. Only two boxes are kept between box A and box
D. Box F is kept two boxes below box E. Either box F or box E is kept on a prime numbered shelf. Box G is kept immediately above box
C. Only three boxes are kept between box C and box
B.