Brent Will Be Leading a Committee Meeting and Wants to Make

Brent will be leading a committee meeting and wants to make sure it is effective and efficient. What should Brent do to get the meeting started? 

A) Wait until all participants arrive before beginning the meeting.
B) Give a quick recap to anyone who arrives late.
C) Go over ground rules at the beginning of the meeting.
D) Brent should do all of these.