Seven people, J, K, L, M, N, O and P are sitting in a straight row, facing north. J sits fourth to the left of N. O sits third to the right of J. M sits fourth to the left of O. Only three people sit between P and L. No one sits to the left of L. Who sits at the second position from the right end of the row?

A

P

B

N

C

O

D

M