For all numbers x, the function f is defined by f(x) = 3x + 1 and the function g is defined by g(x) = \frac{x-1}{3} . If c is a positive number, what is the value of g(c)?
(1) f(c) = 13
(2) f(1) = c
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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 statement 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