Seven persons, K, L, M, N, O, P and Q, are sitting in a row facing towards the north. K and M are sitting together. O is at the east-end. P is between Q and M. Q is sitting in the middle. N is between O and L. K is sitting at the west-end. Who is sitting at the fifth position from the east?

A

M

B

N

C

L

D

P