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Consider the given question and decide which of the following statements is sufficient to answer the question. How old was X on 15 January 2017? Statements: 1. X is 50 years older than his brother Y. 2. Y is 20 years younger than this mother.

A

2 alone is sufficient while 1 alone is not sufficient to answer the given question.

B

Both 1 and 2 are sufficient to answer the given question.

C

Neither 1 nor 2 is sufficient to answer the given question.

D

1 alone is sufficient while 2 alone is not sufficient to answer the given question.

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