Blood Relationship cet question

Question: "Her mother's brother is the only son of my mother's father," Ben remarked, pointing to a girl in the photograph. What is the relationship between the girl's mother and Ben?

Options:A) Mother B) Sister C) Aunt D) Grandmother E) A or C

solution: E. A or C “My mother’s father” means Ben’s maternal grandfather. “The only son of my mother’s father” means Ben’s maternal uncle. The statement says that the girl’s mother’s brother is Ben’s maternal uncle. So, the girl’s mother is the sister of Ben’s maternal uncle. Now, the sister of Ben’s maternal uncle can either be Ben’s mother or Ben’s maternal aunt. Hence, the relationship cannot be uniquely determined. Therefore, both Mother and Aunt are possible answers.