Seven people, A, B, C, D, E, F and G are sitting in a straight row, facing north. A sits second from the left. Only two people sit between A and C. Only three people sit between D and F and D is an immediate neighbour of A. B is an immediate neighbour of D and E is not an immediate neighbour of C. How many people sit between A and G?

A

4

B

1

C

2

D

3