A major impediment to wide acceptance of electric vehicles even on the part of people who use their cars almost exclusively for commuting is the inability to use electric vehicles for occasional extended trips. In an attempt to make purchasing electric vehicles more attractive to commuters, one electric vehicle producer is planning to offer customers three days free rental of a conventional car for every 1,000 miles that they drive their electric vehicle.
Which of the following, if true, most threatens the plan's prospects for success?
(A) Many electric vehicles that are used for commercial purposes are not needed for extended trips.
(B) Because a majority of commuters drive at least 100 miles a week, the cost to the producer of making good the offer would add considerably to the already high price of electric vehicles.
(C) The relatively long time it takes to recharge the battery of an electric vehicle can easily be fitted into the regular patterns of car use characteristic of commuters.
(D) Although electric vehicles are essentially emission-free in actual use, generating the electricity necessary for charging an electric vehicle's battery can burden the environment.
(E) Some family vehicles are used primarily not for commuting but for making short local trips, such as to do errands.
问题分析：A说很多用于商业的电动车对于extended trip来说其实不需要，原文没有提过，干掉。
B说如果响原文那么干的话会有其他费用出现，显然可以驳斥原文。
C说充电的时间是否适用的问题，没说过，干掉。
D说电动车是否会污染环境，这个内容没提过，干掉。
E说家用车主要用途不是commute而是短途旅行，这个选项说的是家用车的用途问题，没说，干掉。
