‘Q * R’ means ‘Q is the mother of R’
‘Q + R’ means ‘Q is the husband of R’
‘Q × R’ means ‘Q is the sister of R’
‘Q ÷ R’ means ‘Q is the son of R’
If ‘D × O ÷ E + Y’, how is D related to Y?

A

Sister

B

Daughter-in-law

C

Daughter

D

Brother