77. A certain mayor has proposed a fee of five dollors per day on private vehicles entering the city, claiming that the fee will alleviate the city's traffic congestion. The mayor reasons that, since the fee will exceed the cost of round-trip bus fare from many nearby points,many people will switch from using their cars to using the bus.
Which of the following statements, if true, provides the best evidence that the mayor's reasoning is flawed?
A. Projected increases in the price of gasoline will increase the cost of taking a private vehicle into the city.
B. The cost of parking fees alreaday makes it considerably more expensive for most people to take a private vehicle into the city than to take a bus.
C.Most of the people currently riding the bus do not own private vehicles.
D.Many commuters opposing the mayor's plan have indicated that they would rather endure traffic congestion than pay a five-dollor-per day fee
E. During the average workday,private vehicles owned and operated by pelple living within the city account for twenty percent of the city's traffic congestion
答案是B,
疑问1：B并不是mayor原因的flaw啊。 感觉这个题目如果通过答案来分析的话，倒像一个weaken题。
疑问2：flaw 类题的解题方法就是当weaken来解吗？
感激不尽！ | 
