Blood Relationships 3rd Question

Pointing out to a lady, a girl said, "She is the daughter-in-law of the grandmother of my father's only son." How is the lady related to the girl ?

A) Sister-in-law	B) Mother
C) Aunt	D) Can't be determined

 Answer & ExplanationAnswer: D) Can't be determined

Explanation:

Girls's father's only son— Girl's brother. Daughter in law of girl’s grandmother can be their mother, or maternal uncle’s wife, i.e. aunt. So relation cannot be determined.