1.  Introducing Reena,Monika said, "She is the only daughter of my father's only daughter." How is Monika related to Reena ?

A. Aunt
B. Niece
C. Cousin
D. Data inadequate
E. None of these

Answer: Option E

Explanation:

Monika's father's only daughter_ Monika.

So, Reena is Monika's daughter, i.e. Monika is Reena's mother.