[求助]孙继军语法上的一道题

11． According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation's four-year colleges and universities.
(A) equivalent to the enrollment of
(B) the equivalent of those enrolled in
(C) equal to those who are enrolled in
(D) as many as the enrollment of
(E) as many as are enrolled in

答案：E

孙在解释的时候说：equal/equivalentto(of)会导致逻辑上的搭配不当。

我不明白为什么“equal/equivalentto(of)会导致逻辑上的搭配不当”，请教各位

天哪，什么顺季军阿。OG 叔叔的题把~~~。　

　你搜索一下ｏｇ　，　用as many as are enrolled in　作搜索项。