Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.
A. a greater proportion than it was
B. a greater proportion than
C. a greater proportion than they have been
D. which is greater than was so
E. which is greater than it has been
Can anyone explain whats the correct answer for this. I see conflicting answers. With many agreeing to C. But my GMAT prep test gave the correct answer as B - which I also agree to. Any suggestions??
A. a greater proportion than it was
B. a greater proportion than
C. a greater proportion than they have been
D. which is greater than was so
E. which is greater than it has been
Can anyone explain whats the correct answer for this. I see conflicting answers. With many agreeing to C. But my GMAT prep test gave the correct answer as B - which I also agree to. Any suggestions??

















