If A + B means A is the sister of B, A - B means A is the brother of B, and A × B means A is the mother of B, what is the relationship of C if A + C - B = true?

A. C IS THE SISTER OF B

If A is the brother of B, and B is the sister of C, what is the relationship of C to A?

B. BROTHER

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

A. AUNT

If J is the son of K and K is the daughter of L, what is J's relationship to L?

A. GRANDSON

If A + B means A is the brother of B, and B - C means B is the sister of C, what is the relationship between A and C?

A. BROTHER