单项选择题

The shop promised its customers that it would never sell fake goods, and sure enough it did so.

A.这家商店向顾客发誓,决不出售假货,并且足够的证据确信它是这样做的。
B.这家商店的顾客发誓,它没卖过假货,并且有足够的证据表明是这样。
C.这家商店向顾客允诺不卖假货,而且它确实这样做了。
D.这家商店向顾客允诺决不卖假货,而且它确实做到了。