[求助]新prep1-117

In an attempt to reduce the crime rate, the governor is getting tough on criminals and making prison conditions harsher严厉的.  Part of this effort has been to deny inmates the access
                    they formerly had to college-level courses.  However, this action is clearly counter to the governor's ultimate goal, since after being released from prison, inmates who had taken such courses committed far fewer crimes overall than other inmates.

Which of the following is an assumption on which the argument depends?

A. Not being able to take college-level courses while in prison is unlikely to deter anyone from a crime that he or she might otherwise have committed.

B. Former inmates are no more likely to commit crimes than are members of the general population.

C. The group of inmates who chose to take college-level courses were not already less likely than other inmates to commit crimes after being released.

D. Taking high school level courses in prison has less effect on an inmate's subsequent behavior than taking college-level courses does.

E. The governor's ultimate goal actually is to gain popularity by convincing people that something effective is being done about crime.

看了几遍没有看清楚选项C 到底是什么意思，我之前选择的是A

请NN指教....这个逻辑意思真没弄明白