Rail Executive: Five years ago we discontinued train service between Lamberton and its suburbs because low ridership caused total fares collected to be substantially lower than the cost of operating the service. it is true that recent population growth in the suburban communities suggests increased potential ridership, nevertheless since most of the newer residents own automobiles, restoring the train service this year would still result in serious deficits.
Which of the following, if true casts the most serious doubt on the rail executive’s argument?
A: once train service along a given route has been discontinued, there are substantial start-up costs associated with restoring service along that route.
B: most of the new residents of Lumberton’s suburbs do not need to travel into Lamberton regularly for shopping or recreation
C: if train service were restored this with increased hours of service there would not be an increase in total ridership
D: A survey conducted last year showed that few people living in Lamberton or its suburbs support increased public funding for mass transportation
E: Recently there have been sharp increases in parking fees in Lamberton and in highway tolls on major commuter routes.
楼上的理解错了，题干是说DISCONTINUED，是关闭，并不是重新开通
我觉得A的问题在于，A并没有解释关闭后增长的维护费用等 和 不关闭继续营业时亏本的差额， 孰大孰小
所以其实A并不一定是削弱。因为虽然 the cost associated with restroring service会突然增加，但如果和营业亏本的损失比还不算什么的话，自然还是关门比较好一点。
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