[求助]GWD28-17!急

28-17: 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 accident
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: 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.

C: Very few fatal collisions involving
trucks in Partoria are collisions between two trucks.

D: In Partoria, the safety record of
the trucking industry as a whole has improved slightly over the past ten years.

E: In Partoria, the maximum legal
payload of a triple-trailer truck is less than three times the maximum legal
payload of the largest of the single-trailer trucks

请问这题的答案是否为E.有哪位热心人可以参谋一下. 谢谢!

28-17: 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 accident
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?

明显是A，前面说三拖的比一拖和二拖的车祸少三分之一，所以建议多用三拖的。

而A说卡车公司到目前为止在主要的高速公路上少用三拖，三拖只是lightly traveled sections 。简单说，意思是，为什么三拖的车祸数据低啊？因为它很少开高速。如果开高速，说不定更多车祸，所以削弱了建议。

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.

C: Very few fatal collisions involving
trucks in Partoria are collisions between two trucks.

D: In Partoria, the safety record of
the trucking industry as a whole has improved slightly over the past ten years.

E: In Partoria, the maximum legal
payload of a triple-trailer truck is less than three times the maximum legal
payload of the largest of the single-trailer trucks

请问这题的答案是否为E.有哪位热心人可以参谋一下. 谢谢!