Sita and Gita are the sisters of Ravi. Kaushal is the father of Sita. Vansh is the son of Gita. How Kaushal is related to Vansh?

Maternal Uncle Paternal Grandfather Paternal Uncle Maternal Grandfather

Maternal Grandfather

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, clearly (d) is correct answer.