"If 'R $$\times$$ S' means 'R is the mother of S'.
If 'R $$+$$ S' means 'R is the son of S'.
If 'R $$\div$$ S' means 'R is the daughter of S'.
If 'R $$-$$ S' means 'R is the husband of S'.
How is A related to B in the expression '$$A + D - C \times B$$'?

A

Husband

B

Father

C

Brother

D

Son