In Gandania, where the government has a monopoly on tobacco sales, the incidence of smoking-related health problems has risen steadily for the last twenty years.  The health secretary recently proposed a series of laws aimed at curtailing tobacco use in Gandania.  Profits from tobacco sales, however, account for ten percent of Gandania’s annual revenues.  Therefore, Gandania cannot afford to institute the proposed laws.

Which of the following, if true, most seriously weakens the argument?

1. All health care in Gandania is government-funded.

2. Implementing the proposed laws is not likely to cause a significant increase in the amount of tobacco Gandania exports.

3. The percentage of revenue Gandania receives from tobacco sales has remained steady in recent years.

4. Profits from tobacco sales far surpass any other single source of revenue for the Gandanian government.

5. No government official in Gandania has ever previously proposed laws aimed at curtailing tobacco use.

答案是A，我怎么觉得选C啊，谁能解释一下？谢谢！

找了个牛人的解释：烟草赚钱是事实，不能ban是结论

说烟草导致病增多
然后因为烟草是收入， 所以不能ban烟草

这里的主要推力是，因为烟草带来钱，所以不能ban
weaken要去反对说烟草可以ban
C，说烟草收入稳定。。 这样要是ban了，不就木有钱拉 所以C是support

A是这么说的，政府要出钱看病

这样不ban烟草，导致大家得病，于是政府就用卖烟的钱来给大家治病

那不是还不如不卖烟阿