In the two years following the unification of Germany in 1989, the number of cars owned by residents of East Germany and the total distance traveled by cars in East Germany both increased by about 40 percent. In those two years, however, the number of East German residents killed each year as car occupants in traffic accidents increased by about 300 percent.
Which of the following, if true, most helps to explain the disproportionate increase in traffic fatalities?
(A) The average number of passengers per car was higher in the years before unification than it was in the two years after.
(B) After unification, many people who had been living in East Germany relocated to West Germany.
(C) After unification, a smaller proportion of the cars being purchased by East German residents were used vehicles.
(D) Drivers who had driven little or not at all before 1989 accounted for much of the increase in the total distance traveled by cars.
Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.
问题分析：A说统一前乘车的人数比统一后要高，原文就没提过乘客数量，干掉。
B说统一之后很多人从东德移民到西德乐，文章反复谈的是东德的事情，移民到西德不会影响到东德，范围不对，干掉。
C是统一后，东德人买的一小部分车是二手车，很扯的一个选项，干掉。
D说统一前几乎不开车的现在开的多了，说的统一后开车人员的变化，原文谈的就是这个变化，留着。
E说其他人例如骑摩托车的等人的事情，范围不对，干掉。
