T, S and R are three brothers. T's son Q is married to K and they have one child Rahul blessed to them. M the son of S is married to H and this couple is blessed with a daughter Madhvi R has a daughter N who is married to P. This couple has one daughter Karuna born to them. How is Madhvi related toS ?

A

Daughter

B

Niece

C

Granddaughter

D

None of these