Study the following information carefully to answer the given question. There are eight members i.e. M, N, Q, A, R, O, B and P in a family having thre...

Study the following information carefully to answer the given question. There are eight members i.e. M, N, Q, A, R, O, B and P in a family having three generation and all are related to Q in a certain way and there are only two married couple in the family. They all sit around a circular table such that all face towards the centre. Q sits third to the left of his mother-inlaw, who sits second to the left of sister of R. N is unmarried. O has only one son. B is the grandson of A, who sits third to the right of N, who is the aunt of B. O is the mother of R. M is the mother-in-law of P and sits on the immediate left of brother in law of Q. N is the only daughter of M. A and O is not the married couple. Son of Q sits third to the right of Q’s brother-in-law. R is not married. N is not the immediate neighbour of P. P is married to Q.
Question: Who among the following is the mother of B?