GMAT Sentence Correction (SC) | Re: For the farmer who takes care to keep them cool, providing

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
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