GMAT Sentence Correction (SC) | Re: Having accounted for only 13 percent of the student body at Northlake

Source: McGraw HillGmat

Having accounted for only 13 percent of the student body at Northlake High, students who attended Megalopolis Middle School dominate the Northlake High student government.

A. Having accounted for..Wrong..Need contrast words like Despite, although even though etc..Also accounted is in past while dominate is present..so tense mismatch
B. With... Wrong...Need contrast words like Despite, although even though etc. Also "Students with only 13 percent of student body" doesn't
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