The course normally attracts 20 students per year, _____ up to half are from abroad.

       A. of whom   B. for whom  C. in which  D. with whom

The course normally attracts 20 students per year, ________up to half will be from overseas.

A. in which        B. for whom     C. with which       D. of whom

 The course normally attracts 20 students per year, _____ up to half will be from abroad.

A. of whom    B. in which     C. for whom   D. with whom

The course normally attracts 20 students per year, ________up to half will be from overseas.