For each positive integer k,let $$a_k$$= (1 +$$\frac{1}{k+1}$$). Is the product $$a_1$$, $$a_2$$...,$$a_n$$ an integer?
1. n +1 is a multiple of 3.
2. n is a multiple of 2.
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AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
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BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
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CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
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DEACH statement ALONE is sufficient.
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EStatements (1) and (2)TOGETHER are NOT sufficient.
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正确答案: B