Study the following information carefully and answer the question given below.

Seven persons i.e. A, B, C, D, E, F and G are sitting in a straight line such that all of them are facing towards the North, but not necessarily in the same order.

F sits at one of the ends.  Two persons sit between F and B.  E sits third from the right end.  A sits third to the left of E.  G sits second from one end.  C sits second to the left of D.

How many persons sit between A and G?

Three