1. How are N and D related ?
I. A is the sister of D.
II. D is the mother of R who is the only son of N.
(A): if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question. (B): if the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question. (C): if the data either in Statement I alone or in Statement II alone are sufficient to answer the question. (D): if the data even in both Statements I and II together are not sufficient to answer the question. (E): if the data in both Statements I and II together are necessary to answer the question.
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