M is the grandmother of N. N has a brother O. What is M's relation to O?

B. GRANDMOTHER

A is the brother of B. C is the mother of B. How is A related to C?

A. SON

G is the uncle of H. H is the daughter of J. How is G related to J?

B. BROTHER-IN-LAW

D is the mother of E and F. G is the father of E. How is F related to G?

A. SON

P is the grandmother of Q. R is the father of Q. How is P related to R?

A. MOTHER