Q: There are six persons 1, 2, 3, 4, 5 and 6. 3 is the sister of 6. 2 is the brother of 5's husband. 4 is the father of 1 and grandfather of 6. There are two fathers, three brothers and a mother in the group. Which of the following is a group of brothers ?

• A. 1, 2, 3
• B. 3, 2, 6
• C. 1, 2, 4
• D. 1, 2, 6