求助，搅昏了~GWD-TN-24中第二套的第8题

  Which of the following most logically completes the passage?

Garnet and RenCo each provide health care for their employees.  Garnet pays for both testing of its employees’ cholesterol levels and treatment of high cholesterol.  This policy saves Garnet money, since high cholesterol left untreated for many years leads to conditions that require very expensive treatment.  However, RenCo dose not have the same financial incentive to adopt such a policy, because ______.

A.    early treatment of high cholesterol dose not entirely eliminate the possibility of a stroke later in life

B.    the mass media regularly feature stories encouraging people to maintain diets that are low in cholesterol

C.    RenCo has significantly more employees than Garnet has

D.    RenCo’s employees are unlikely to have higher cholesterol levels than Garnet’s employees

E.     the average length of time an employee stays with RenCo is less than it is with Garnet

为什么选E？我觉得D也对，E中只说时间短，如果一个30年一个29年这样时间只短一年没意义吧

lz 可以仔细一些读题

D  RenCo’s employees are unlikely to have higher cholesterol levels than Garnet’s employees

D是排除了R比G高的可能 但并没有排除他们相同的可能

如果相同 那为什么没有financial incentive 呢？