To evaluate a plan to save money on office-space expenditures by having its employees work at home, XYZ Company asked volunteers from its staff to try the arrangement for six months. During this period, the productivity of these employees was as high as or higher than before. Which of the following, if true, would argue most strongly against deciding, on the basis of the trial results, to implement the company’s plan? (A) The employees who agreed to participate in the test of the plan were among the company’s most self-motivated and independent workers. (B) The savings that would accrue from reduced office-space expenditures alone would be sufficient to justify the arrangement for the company, apart from any productivity increase. (C) Other companies that have achieved successful results from work-at-home plans have work forces that are substantially larger than that of XYZ. (D) The volunteers who worked at home were able to communicate with other employees as necessary for performing the work. (E) Minor changes in the way office work is organized at XYZ would yield increases in employee productivity similar to those achieved in the trial.

我觉得B，C，D都可以看做加强，但是OG却说他们都是无关的，

请牛牛指教，谢谢

Although choices B, C and D provide information that might be relevant to assessing the likely success of the plan, if implemented, none of them specifically casts doubt on the validity of the trial results; thus they are incorrect choices. Choice E is incorrect; since reduced office-space expenditures, rather than productivity increases, would be the goal of implementing the plan, the fact that alternative measures might achieve equal productivity gains is not directly relevant.

我觉得og的解释很清楚啊～有什么不明白的嘛？

a是无关的啊，别人要求不要求和药厂没有关系的

b说临床试验就要占的十年，又需要有收入回报才可以开发新药。所以提出延长保护是合理的

别人在保护下享用了专利20年，药厂只有10年可用，多亏阿