P is the only son of Q who is the only daughter of S. D is the mother of B and daughter-in-law of Q. How is B related to Q?

Options

A. grandson
B. granddaughter
C. son
D. cannot be determined

Answer

D

Explanation

Only son of Q `rArr` R
only daughter of S `rArr` Q.
D `rArr` B.s mother
D `rArr` Q.s daughter-in-law
So, Q `rArr` B.s grandmother.
So, B `rArr` Q.s grandson or grand-daughter
The Blood relationship tree / chart can be constructed as given below :

Therefore, the relationship cannot be determined.