Let the Blood relationships between 2 persons be defined as
i) X + Y $$\Rightarrow$$ X is husband of Y
ii) X - Y $$\Rightarrow$$ X is sister of Y
iii) X $$\times$$ Y $$\Rightarrow$$ X is son of Y

what is the relationship A to B in A - C $$\times$$ B?

A

Daughter

B

Sister

C

Niece

D

Daughter-in-law