【求助】gwd-6 38 看完解释还是不懂

yuyueforever

GWD6-Q38:   assumption

Three large companies and seven small companies currently manufacture a product with potential military applications.  If the government regulates the industry, it will institute a single set of manufacturing specifications to which all ten companies will have to adhere.  In this case, therefore, since none of the seven small companies can afford to convert their production lines to a new set of manufacturing specifications, only the three large companies will be able to remain in business.

 

Which of the following is an assumption on which the author’s argument relies?

 

1. None of the three large companies will go out of business if the government does not regulate the manufacture of the product.[C1] 
2. It would cost more to convert the production lines of the small companies to a new set of manufacturing specifications than it would to convert the production lines of the large companies.[C2] 
3. Industry lobbyists will be unable to dissuade the government from regulating the industry.[C3] 
4. Assembly of the product produced according to government manufacturing specifications would be more complex than current assembly procedures. [C4] 
5. None of the seven small companies currently manufactures the product to a set of specifications that would match those the government would institute if the industry were to be regulated.[C5] 

   Answer:

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 [C1]irrelevant

 [C2]Tricky answer choice. Cost more does not mean only three largest companies will survive.

 [C3]irrelevant

more complex does not mean only the three lrgest companies will survive. [C4]

 [C5]Correct. Without this assumption, the author can not conclude that only the three large companies can survive because if one (or any number) of the small companies has the same set as regulation, there is no way to conclude that only three large companies will survive.

本人选b答案选e,看完解释还是不明白，请求高手帮我用中文解释一下这道题。多谢！