Based on the following relations, which of the given options indicate that W is the niece of X?
A+B means that A is the brother of B.
A*B means that A is the father of B.
A-B means that A is the sister of B.
Options A and D indicate that W is the sister of X.
Option B indicates that W is the father of X.
Only option C gives the required relationship, i.e., W is the niece of X.
Hence, the answer is option C.
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