Question

'R - S' means 'R is the brother of S' 'R # S' means 'R is the daughter of S' 'R * S' means 'R is the father of S' 'R $ S' means 'R is the wife of S' If 'W $ X - Z * Y', then how is W related to Z?

A W is the sister-in-law of Z
B W is the sister of Z
C W is the daughter of Z
D W is the son of Z
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