There are seven row houses, M, N, O, P, Q, R and S, in a campus, but not necessarily in
the same sequence. P is not at any of the ends. R is to the immediate right of P. S is
third from the left. O is at the left end. M is second from the right. O is not besides N.
Where is R located?

A

Fourth from the right

B

Second from the left

C

At the right end

D

Third from the right