Read the following information and answer the question that follows:
Rekha and Ajay are the two judges at a beauty contest, selecting candidates for various international beauty pageants. Each of them is required to select a group of three candidates from a total of 7 contestants available. The 7 contestants are M, N, O, P, Q, R, and S. The groups have to be mutually exclusive. The following further restrictions apply:
1] If one judge selects N or Q, then the other judge has to select P or S respectively and vice versa.
2] S and M both can never be selected by the same person and, P and R never go together.