请教NN

bettyofarim

:   请教LSAT-1-1-11,12
11. Hanifah: A recent survey shows that there are fewer people who drive only on weekends than there are people who drive to work each weekday. As a result, weekend-only drives are involved in fewer accidents. Therefore, insurance rates should be adjusted so that rates would be significantly higher for the regular commuters.
Katsu: I can’t agree with your conclusion. The same study also showed that, although weekend-only drives are involved in fewer accidents, when considered on the basis of accidents-per-mile-driven their records are worse than those of regular commuters. Therefore, insurance rates should be adjusted to increase the rates of weekend-only drivers over those of regular commuters.
In the conversation above, Katus does which one of the following?
(A) Katsu disagrees with each of the premises of the argument that Hanifah offers.
(B) Katsu cites additional evidence stating that weekend-only drivers are actually involved in a greater number of accidents than regular commuters.
(C) Katsu accuses Hanifah of using inaccurate statistical information.
(D) Kasu proves that Hanifah didn’t read the entire report that was cited.
(E) Katsu disagrees with Hanifah over how accident records are to be evaluated for insurance rates.
答案是E。请问B错在哪了？原文第二人承认：although weekend-only drives are involved in fewer accidents，然后后面补充一个没有考虑到的情况。这样B中的additional evidence 应该没有错吧？再看后面的比较：weekend-only drivers are actually involved in a greater number of accidents than regular commuters是原文accidents-per-mile-driven their records are worse than those of regular commuters 的改写吧？

kathy72

因为两人论证的依据是同一份调查报告， 因此B说的另外一个证据是不对的。