Is $$x^{2}$$ - $$y^{2}$$ a positive number?
1.x - y is a positive number.
2.x+ y is a positive number.
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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: C