农信银通存通兑本代他存款业务，若本行失败，农信银中心成功。则该差错形成的原因是（）。

A.我行主机记账失败，引发自动冲正失败

B.柜台冲销或系统自动冲正

C.我行主机记账成功的结果未返回成员端平台，平台引发自动冲正，但我行主机未冲正成功，农信银中心和开户行冲正成功，前台返回“交易失败”

D.以上原因均存在

_____ English that I couldn’t follow her.

A．So did fast the native speak

B．So fast did the native speak

C．Did the native speak so fast

D．So fast the native did speak