‘M $ K’ means ‘M is the mother of K’.
‘M # K’ means ‘M is the father of K’.
‘M @ K’ means ‘M is the husband of K’.
‘M % K’ means ‘M is the daughter of K’.
If A $ C @ R, then how is R related to A?

A

Husband's father

B

Mother

C

Son's wife

D

Daughter