If A + B means A is the mother of B ;
A / B means A is the brother of B ;
A x B means A is the son of B and
A - B means A is the daughter of B,
which of the following means C is the niece of D ?
Answer: C. C - P / D
C is the niece of D means C is the daughter of the brother (say P) of D i.e. C - P / D