GMAT Sentence Correction (SC) | The ‘lazy’ bees that account for almost 80 percent of the bee hive

+1 D
In my 2 cents,
A) that account for almost 80 percent of the bee hive population usually contribute little to the activities of thehive, but working

B)account for almost 80 percent of the bee hive population usuallycontribute little to the activities of the hive; however, theywork
-- double vert without proper conjunction

C) accounting for almost 80 percent of the bee hive population usually contribute little to the activities of the hive,but working

D) accounting for almost 80 percent
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