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If $$x \geq 0$$, $$y \geq 0$$, and $$x^{2}$$+$$y^{2}$$=$$1$$, which of the following statements must be true?
Indicate all such statements.
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A.$$x \geq 1$$
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B.$$x \leq 1$$
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C.$$y \geq 1$$
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D.$$x+y \leq 1$$
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E.$$x+y \geq 1$$
B,E显示答案
