Pointing to a photograph, a lady tells Pramod, "I am the only daughter of this lady and her son is your maternal uncle." How is the speaker related to Pramod`s father ?

A. Sister-in-law
B. Wife
C. Either a or b
D. Neither a nor b
Answer: B . Wife

Justification: Clearly, the speaker's brother is Pramod's maternal uncle
So, the speaker is Pramod's mother or his father's wife.