逻辑 GWD13 V5, 选项 C 为什么错？

Q5:

Vorland’s government is planning a nationwide ban on smoking in restaurants.  The objection that the ban would reduce restaurants’ revenues is ill founded.  Several towns in Vorland enacted restaurant smoking restrictions five years ago.  Since then, the amount the government collects in restaurant meal taxes in those towns has increased 34 percent, on average, but only 26 percent elsewhere in Vorland.  The amount collected in restaurant meal taxes closely reflects restaurants’ revenues.

Which of the following, if true, most undermines the defense of the government’s plan?

1. When the state first imposed a restaurant meal tax, opponents predicted that restaurants’ revenues would decline as a result, a prediction that proved to be correct in the short term.


2. The tax on meals in restaurants is higher than the tax on many other goods and services.


3. Over the last five years, smoking has steadily declined throughout Vorland.


4. In many of the towns that restrict smoking in restaurants, restaurants can maintain separate dining areas where smoking is permitted.


5. Over the last five years, government revenues from sales taxes have grown no faster in the towns with restaurant smoking restrictions than in the towns that have no such restrictions.

选项 C 为什么错？是有人不吸烟了-> 禁烟了他们还会去餐馆 -> 餐馆revenue没下降。

http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=78057

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另外，MM在发问前，先用搜索功能或是讨论汇总看看有没有人问过同样的问题，这样不用等回复，效率高，你说呢？