In the xy-plane, point (r, s) lies on a circle with center at the origin. What is the value of {r}^{2}+{s}^{2}?
(1)The circle has radius 2.
(2)The point (\sqrt 2, -\sqrt2) lies on the circle.
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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