Introducing Ravi, Meena said, "She is the sister of the son of the wife of my husband." How is Meena related to Ravi?

Mother

Note:

↑ or ↓ ⇒ Upward or downward line shown "generation gap" .

   =    ⇒ Double lines shown "relation b/w Husband & Wife"

   —   ⇒ single line shown "relation between them other than Husband & Wife".

So, correct answer is (C)