Data Sufficiency — Relationships: B is the brother of A. How is A related to B (male/female)? Statement I: A is the sister of C. Statement II: E is the husband of A. Decide which statements are sufficient to answer the question. Choose the correct sufficiency option.

Difficulty: Easy

Statement I alone is sufficient, but Statement II alone is not sufficient.
Statement II alone is sufficient, but Statement I alone is not sufficient.
Both statements I and II together are sufficient, but neither alone is sufficient.
Either statement I or statement II alone is sufficient.
Even both statements I and II together are not sufficient.

Correct Answer: Either statement I or statement II alone is sufficient.

Explanation:

Goal
Establish A's gender to state A's relation to B.

Statement I
A is the sister of C ⇒ A is female ⇒ with B given male as brother of A, A is B's sister.

Statement II
E is the husband of A ⇒ A is female ⇒ hence A is B's sister.

Conclusion
Each statement alone suffices.

Final Answer
Either statement I or statement II alone is sufficient.

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