费费逻辑宝典107题的正确解释

和很多G友一样，一开始对费费逻辑宝典107题困惑不已，现在知道正确的解释应该是这样的：
此题费费逻辑宝典中的题目有些错误，经查证LSAT原题，掉了几个关键词如下：
Because of the recent transformation of the market, Quore, Inc. must increase productivity, 10 percent over the course of the next two years, or it will certainly go bankrupt. In fact, however, Quore’s production structure is such that if a 10 percent productivity increase is possible, then a 20 percent increase is attainable.
If the statements above are true, which one of the following must on the basis of them also be true?
(A) It is only Quore’s production structure that makes it possible for Quore to survive the transformation of the market.
(B) Quore will not go bankrupt if it achieves a productivity increase of 20 percent over the next two years.
(C) If the market had not been transformed, Quore would have required no productivity increase in order to avoid bankruptcy.
(D) Because of the transformation of the market, Quore will achieve a productivity increase of 10 percent over the next two years.
(E) If a 20 percent productivity increase is unattainable for Quore, then it must go bankrupt.

这个题是说：
Q要不破产，必须增长10%（注意是必要条件，而不是充分条件。也就是说，就算增长10%（甚至20%，30%）也不能保证一定不破产，这就是为什么B不对）
Q若能增长10%，则也能增长20%（这句是关键，这句的意思也可以这样说：若不能增长20%，则必不能增长10%）
这样E就通了，不能增长20%，则必不能增长10%；若不能增长10%，则Q必破产。