GMAT Sentence Correction (SC) | Re: Because sales dropped in the wake of the sub-prime mortgage

Because sales dropped in the wake of the sub-prime mortgage crisis, in 2009 Vendiflex Corporation slashed its workforce to2,500, almost 80% fewer than that of 2008 .

A. almost 80% fewer than that of 2008 - fewer is incorrect as we are comparing workforce (uncountable )
B. almost 80% fewer than 2008 - fewer is incorrect as we are comparing workforce (uncountable )
C. almost 80% less than 2008 - illogical comparison - workforce and year
D. almost 80% less than the 2008 workforce - Correct
E. almost
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