Six persons A, B, C, D, E and F are sitting in two lines with three persons in each line. All are facing north. B is ahead of D. F is behind E. C and D are diagonal to each other. C is just before E. A is after D. Which two persons are sitting at the last positions of both the rows?

A

D and E

B

B and E

C

B and D

D

A and F