A woman introduces a man as the son of the brother of her mother.
How is the related to the woman ?

C. COUSIN

If X is the daughter of Y and Y is the sister of Z, what is the relationship of X to Z?

A. NIECE

If G is the daughter of H and H is the sister of I, what is G's relationship to I?

B. NIECE

If D is the daughter of E and E is the mother of F, what is the relationship of F to D?

D. SIBLING

If X + Y means X is the daughter of Y, X - Y means X is the son of Y, and X × Y means X is the uncle of Y, what is the relation of Z if X + Y - Z?

B. Z IS X'S FATHER