96. (GWD-28-Q17 different type) In the nation of Partoria, large trucks currently account for 6 percent of miles driven on Partoria's roads but are involved in 12 percent of all highway fatalities. The very largest trucks－those with three trailers－had less than a third of the acciednt rate of single- and double-trailer trucks. Clearly, therefore, one way for Partoria to reduce highway deaths would be to require shippers to increase their use of triple-trailer trucks. Which of the following, if true, most seriously weakens the argument? (A) No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks. (B) So far only the best, most experienced drivers for Partorian trucking companies have been driving triple-trailer trucks. 答案是B，但不明白呀～～ 我爬DC後，原题GWD-28-Q17选项是 (A) Partorian trucking companies have so far used triple-trailer trucks on lightly traveled sections of major highways only. (B) No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks. 答案却说是A，谁来帮我分析一下呀!!感谢~~!! --

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