以下检索式，哪个检索结果最多？

A、ti=((straw* or stalk*) and fermentation and (ethanol or bioethanol));

B、ti=((straw* or stalk*) and fermentation and (ethanol* or bioethanol*));

C、ts=((straw* or stalk*) and fermentation and (ethanol* or bioethanol*));

D、ts=((straw* or stalk*) and fermentation and (ethanol or bioethanol))