New Batches at TathaGat Delhi & Noida!
Re: SENTENCE CORRECTION TIPS- 1 CUT THE NOISE
by HARDIK RANKA - Wednesday, 13 August 2014, 03:06 PM
  According to Interstudy, a nonprofit organization that studies health maintenance organizations (HMOs), they estimate that, in comparison to last year, when only 36 percent of the nation's 607 HMOs was profitable, this year 73 percent will be.
(A) they estimate that, in comparison to last year, when only 36 percent of the nation's 607 HMOs was profitable, this year 73 percent will be
(B) compared to only 36 percent of the nation's 607 HMOs being profitable last year, they estimate 73 percent would be this year
(C) only 36 percent of the nation's 607 HMOs were profitable last year; it estimates that this year 73 percent will be
(D) it estimates 73 percent of the nation's 607 HMOs would be profitable this year; last year that was only 36 percent.
(E) only 36 percent of the nation's 607 HMOs last year were profitable, whereas they estimate it this year to be 73 percent.

how can C be the answer? please explain...  "73 percent will be " doesnt look appropriate.