Hi all<br/><br/>The course is .............. confined to the fresman class ............. includes the upperclassmen.<br/><br/>A) both/and<br/>B) not just/but also<br/>C) not/but<br/>D) whether/or<br/>E) so/as<br/><br/>I think B is OK. But what makes option A and C wrong?<br/><br/>Thank you.