Data Sufficiency — how is A related to D? (family link via B) Statements: I. B is the brother of A. II. B is D's son. Choose the correct sufficiency option.
Verbal Reasoning
Data Sufficiency
Difficulty: Easy
Choose an option
Answer
Correct Answer: Neither I nor II is sufficient
Explanation
Reasoning I: B is A's brother ⇒ A's relation to D unknown. II: B is D's son ⇒ A not mentioned. Together: B is both A's brother and D's son, so A is also a child of D (son or daughter). The type of relation (child) can be concluded only when both statements are used.
Answer per data-sufficiency choices Neither I nor II is sufficient individually. (Both together identify A as D's child.)