Data Sufficiency — Relationships: How is T related to K? Statement I: R's sister J has married T's brother L, who is the only son of his parents. Statement II: K is the only daughter of L and J. Decide which statements are sufficient to answer the question. Choose the correct sufficiency option.

Difficulty: Medium

• 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.