Question Paper from: SBI Clerk mains 2016

Eight friends L, M, N, O, P, Q, R and S are sitting in a straight line but not necessarily in the same order. Four of them are not facing north. N is not facing north. P faces south and both the immediate neighbours of P faces north. S sits second to the right of P and M sits third to left of P. O is not facing south but both the immediate neighbours of O do not face north. R sits second to the left of L. M sits fifth to the right of S. Q is an immediate neighbours of O. M, the immediate neighbor of N, is not facing south. L is not facing north.

Who among the following sit at the extreme ends of the line?