'A $$\times$$ B' means 'A is the husband of B'
'A $$+$$ B' means 'A is the brother of B'
'A $$\div$$ B' means 'A is the sister of B'
'A $$-$$ B' means 'A is the wife of B'
How is X related to A in the expression '$$X + Y \div Z - A$$'?

A

Brother

B

Sister's husband

C

Wife's brother

D

Son