According to a survey of graduating medical students conducted by the Association of American Medical Colleges, minority graduates are nearly four times more likely than are other graduates in planning to practice in socioeconomically deprived areas.

A. minority graduates are nearly four times more likely than are other graduates in planning to practice

B. minority graduates are nearly four times more likely than other graduates who plan on practicing

C. minority graduates are nearly four times as likely as other graduates to plan on practicing

D. it is nearly four times more likely that minority graduates rather than other graduates will plan to practice

E. it is nearly four times as likely for minority graduates than other graduates to plan to practice

解释中给了C。但是我觉得C改变了原句子的意思，原句的意思是5倍，而C变成了四倍，虽然A的more likely in planning不是一个简洁的用法，但是在语法上是正确的。大家觉得呢？

The idiomatic construction should be "be likely to do sth", which makes C the best choice!