industrialists from the country Distopia were accused of promoting the Distopia intervention in the Arcadian civil war merely to insure that the industrialists' facilities in Arcadia made substanstial profits during the war.Yet this cannot be the motive since,as the Distopians forsaw,Distopia's federal expenses for the intervention were 8 billion dollars,whereas,during the war,profits from the DIstopian industialists' facilities in Arcadia totaled only 4 billion dollars.

which of the following,if true,exposes a serious flaw in the argument made in the second sentence above？

answer:

B:the largest proportion of Distopia's federal expenses is borne by those who receive no significant industial profits.

答案的意思是“D的花费大部分是由利润很少的企业所支付的”么？

想不通这个答案怎么解释？

D国的工业家被指责说，他们调停A国内战只是为了使他们在A国的产业能继续盈利。有观点认为，这个看法是错的，因为D国用于调停的成本是8，而这些产业得到的好处是4，4〈8，所以他们不是为了利益而调停的

B大部分调停的费用不是由这些既得利益者出的

My personal understanding of the second sentence: 保护facilities以维护industrialists的profit并不能成为他们煽动D国干涉A国内战的动机，因为可以预见到要是D国人参与A国内战，费用高达8，而保护industrialists的profit只有4 （不合算！）.

这个“不合算！”有一个比较隐蔽的假设：industrialists必须要承担大部分的expenses。

若是expenses不是由那帮industrialists来埋单的话，industrialists就很合算了，于是达到削弱目的。
（分享做这道题的感悟：要注意通过语气去体会文章意思！“totaled only"读出不合算之意）