f(x)=$$\frac{z}{x}$$.The definition domain of $$x_1$$,$$x_2$$ is the range of f(x). Is f$$(x_1)$$ less than f$$(x_2)$$ when $$x_1$$<$$x_2$$?
1：$$x_1$$>0
2：z > 0
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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: C