Which choice is correct and why?

猪智

This SC question is supposed to be easy, yet caught me somehow on the spot.
Here follows the question:

Anxious about declining student test scores and frustrated by some teachers' lack of commitment to improving results, the Brookline Schold board implemented a mandatory after-school program that requires the teachers of underachieving students to be tutored in core academic subjuects.
A. the teachers of underachieving students to be tutored in core academic subjects
B. the tutoring of teachers of underachieving students in core academic subjects
C. teachers to tutor underachieving students in core academic subjects
D. underachieving students be tutored in core academic subjects by their teachers
E. students who are underachieving to be tutored by their teachers in core academic subjects

My analysis:
A - wrong. Should be students other than teachers who are to be tutored.
B - wrong. Same reason as that of Choice A.
C - look good, hold it.
D - wrong. The correct one should be require THAT students be tutored...
E - wrong. Wordy (students who are underachieving vs. underachieving students)

So, C is CORRECT.

Please correct me if im wrong. Many thanks in advance!

Aiki-Shaw

i choose C as well

IAMEloise

Tommy替课时大概是这么说的：
X A&B: 被tutored的是teachers，after-school programs→说明本该是学生被 tutored
√C:  in core… 正确地修饰tutor
X D: 要么require that… be/do, 要么require sb to do，这里又没that又没do
X E：in core… 可修饰tutor也可修饰teachers，歧义【再加上楼主的解释，E存在wordy问题】