Miguel Has Been Invited to Attend His First Sales Meeting

Miguel has been invited to attend his first sales meeting and wants to be an active and productive member from the very beginning.Which of the following should he do to make a good impression?

A) Keep his cell phone on so that he doesn't miss an important call during the meeting.
B) Come prepared to the meeting by doing any preliminary work required.
C) Use body language to show whether he's bored; the meeting leader will appreciate his honesty.
D) Wait to share his views after the meeting so that the meeting can move along efficiently.