Prep新题一道。。。原来旧题的变体

Two computer companies, Garnet and Renco, each pay Salcor to provide health insurance for their employees. Because early treatment of high cholesterol can prevent strokes that would otherwise occur several years later, Salcor encourages Garnet employees to have their cholesterol levels tested and to obtain early treatment for high cholesterol. Renco employees generally remain with Renco only for a few years, however. Therfore, Salcor lacks any financial incentive to provide similar encouragement to Renco employees.

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

A. Early treatment of high cholesterol does not eliminate the possibility of a stroke later in life

B. People often obtain early treatment for high cholesterol on their own

C. Garnet highers a significant number of former employees of Renco.

D. Renco and Garnet have approximately the same number of employees.

E. Renco employees are not, on average, significantly younger than garnet employees.

答案是C，我选的E，这题的逻辑到底在哪儿啊。。。

什么是prep新题？？

LS的貌似有道老题是问support的，这题比原来的问法要绕些。

看出 Salcor要同时为两家公司付钱就可以了，如果C成立，R的员工早期不治疗，到了G还是会中风，一样还得S付钱。E中年龄的问题stimulus中没有任何涉及到的地方，所以我判断为无关了。

大致明白了~~~~我就是挫败在当时觉得G现有员工有多数是R的，没考虑未来这种情况还会持续。。。