D is the daughter of E. F is the brother of E. How is F related to D?

A. UNCLE

G is the mother of H. I is the sister of G. How is I related to H?

A. AUNT

J is the father of K. L is the son of K. How is J related to L?

A. GRANDFATHER

M is the son of N. O is the daughter of N. P is the brother of M. How is O related to P?

A. SISTER

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

A. SISTER