请教一道GMAT语法题,实在是看不懂~

题目

请教一道GMAT语法题,实在是看不懂~
For the farmer who takes care to keep them cool,*providing them with high-energy feed,and milking them regularly,Holstein cows are producing* an average of 2,275 gallons of milk each per year.
A.providing them with high-energy feed,and milking them regularly,Holstein cows are producing
B.providing them with high-energy feed,and milked regularly,the Holstein cow produces
C.provided with high-energy feed,and milking them regularly,Holstein cows are producing
D.provided with high-energy feed,and milked regularly,the Holstein cow produces
E.provided with high-energy feed,and milked regularly,Holstein cows will produce
为什么一开始要说for the farmer...这个句子的主语却是cows.还有,为什么A不对.

答案

原文的翻译大概应该是这样的,因为农夫们让奶牛保持凉爽,提供给它们高能量食物并且按时挤奶,奶牛年均可产奶 2,275 加仑.呃翻译的不太好 ,大概是这个意思勒.从原文中看 ,the farmer 后面没有谓语 ,cows后面跟着谓语,所...