Which one of the follwing expressions is correct?( )
选项：

A:In your meeting invitation, list the action items and request that attendees come prepared to address these issues.
B:Meetings are work, just as in any other work activity. Therefore, the more preparation you have done, the better the results you can expect.
C:In order to keep the meeting on task and within the set amount of time, it is important to have an agenda.
D:People will be more likely to participate in a meeting, by asking questions or offering feedback, if they know what is going to be covered.