There are n different books in a shelf. What is the value of n?
(1)There are only two books of mathematics, and if these two different mathematics books are adjacent, the arrangements of these n books are 240.
(2)If two books are selected randomly from the shelf, there are 15 different combinations.
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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 one 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: D