If a and b are positive numbers, is a < c?
1.The ratio of a to b is 4:1, and the ratio of b to c is 2:7.
2.ab > bc
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AStatement (1) ALONE is sufficient, but statement (2) alone 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: D