There are eight persons – A, B, C, D, E, F, G and H – standing in a queue. D and F are neither standing at the start not at the end of the queue. C, E and G are standing in alternate positions in the same order from the start of the queue to the end. C is standing behind B, who is an even numbered position from the start of the queue. D is two places behind B.
Who is standing at the 5th position?

a B

b E

c C

d None of the above