[单选题]

CH3CH=CHCH2CH=CHCF3+Br2（1mol）主要产物为（）

A . CH3CHBrCHBrCH2CH=CHCF3

B . CH3CH=CHCH2CHBrCHBrCF3

C . CH3CHBrCH=CHCH2CHBrCF3

D . CH3CHBrCH=CHCHBrCH2CF3

参考答案与解析：

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