Data Sufficiency — Relationships: How is X related to Y? Statement I: Y and Z are children of D, who is the wife of X. Statement II: R's sister X is married to Y's father. 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.