Correct Answer & Explanation
Option B
Let's decode the statement:
• "My grandfather" refers to Rajesh's grandfather.
• "The only son of my grandfather" refers to Rajesh's father (assuming Rajesh's grandfather has only one son, who is Rajesh's father).
• "She is the daughter of the only son of my grandfather" means "She is the daughter of Rajesh's father."
• Therefore, the lady is Rajesh's sister.