A # B means ‘A is the brother of B’.
A @ B means ‘A is the son of B’.
A & B means ‘A is the father of B’.
A % B means ‘A is the mother of B’.
If W # Q @ T & Y @ M % K % L, then how is K related to W?

A

Sister

B

Sister-in-law

C

Mother

D

Daughter