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已知集合,,若,则实数应该满足的条件是( ) A. B. C. D.

已知集合6ec8aac122bd4f6e6ec8aac122bd4f6e,若6ec8aac122bd4f6e,则实数6ec8aac122bd4f6e应该满足的条件是(    )                         

A.6ec8aac122bd4f6e                      B.6ec8aac122bd4f6e                  C.6ec8aac122bd4f6e              D.6ec8aac122bd4f6e

 

 

C 【解析】.若,则故选C
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6ec8aac122bd4f6e,则   (    )                                                       

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