If N is the daughter of O and O is the sister of P, what is N's relationship to P?

B. NIECE

If X is the father of Y and Y is the brother of Z, what is Z's relation to X?

C. CHILD

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

A. SISTER

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

A. SISTER