According to a 1996 survey by the National Association of College and University Business Officers, more than three times as many independent institutions of higher education charge tuition and fees of under $8,000 a year than those that charge over $16,000.
A) than those that charge
B) than are charging
C) than to charge
D) as charge
E) as those charging
Code:
A,B,C are clearly out
Confused between D and E. Picked E as I felt 'those' is needed to maintain parallelism with independent institutions