question on twice

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question on twice

by confuse mind » Wed May 23, 2012 11:45 pm
A recent study of the United States tort system indicates that in 2004, accident, product-liability, and other tort costs totaled $260 billion, twice as many as 1990.

twice as many as 1990
twice as much as 1990
twice the amount spent in 1990
a number double those of 1990's
a number double that of 1990's
[spoiler]

OA - C
my answer - E [/spoiler]

Please help me understand why E is not correct.
Source: — Sentence Correction |

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