If (r-s)t=0 , which of the following CANNOT be true?

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If (r-s)t=0 , which of the following CANNOT be true?

A、r-s>0 and t=0
B、r=s and $$t\neq0$$
C、r=s and t=0
D、$$r\neq s$$ and t=0
E、$$r\neq s$$ and $$t\neq0$$

答案：E

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