Six people A, B, C, D, E and F are sitting on the ground in a hexagonal shape. All the sides of the hexagon so formed are of same length. A is not adjacent to B or C; D is not adjacent to C or E; B and C are adjacent; F is in the middle of D and C.
Which of the following is NOT a correct neighboring pair?
1
A and F
2
D and F
3
B and E
4
C and F