How many persons sit between the one who sits to the immediate right of F and the one who sits to the immediate right of C?

Study the following information carefully and answer the questions given below. Eight persons A, B, C, D, E, F, G and H are sitting in straight line. Some of them are facing north while some of the facing south but not necessarily in the same order. G sits at one of the extreme ends of the line. Only three persons sit between F and G. A sits second to the right of F. Both C and B are facing the same direction. D faces north. E sits to the immediate right of G. C sits third to the right of
B. Both F and E face the same direction as
A. Only three persons sit between D and H. F sits to the immediate left of
D. H is not facing the same direction as G. Both the immediate neighbors of D face opposite directions.