GWD4-27 求教各位

Q27:

Newspaper editorial:

In an attempt to reduce the crime rate, the governor is getting tough on criminals and making prison conditions harsher.  art 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 form 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?

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.

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

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.

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

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

寻找前提条件，但是无论如何也不明白A为何是最佳选项。A中的OTHERWISE的情况描述的是上了大学课程所导致的犯罪？

请教各位，谢谢！