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等比数列中,,和的等比中项等于,则 ( ) A.9 B. C. D. 8

等比数列6ec8aac122bd4f6e中,6ec8aac122bd4f6e6ec8aac122bd4f6e6ec8aac122bd4f6e的等比中项等于6ec8aac122bd4f6e,则6ec8aac122bd4f6e                 (    )

A.9              B.  6ec8aac122bd4f6e            C.6ec8aac122bd4f6e          D. 8

 

A 【解析】略
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