Which of the Following Is an Action That Meeting Leaders

Which of the following is an action that meeting leaders should take during or after meetings?

A) Allow everyone to talk at once, if this is the direction in which the meeting discussion heads.
B) Immediately deal with agenda items at the start of the meeting.
C) Delay starting a meeting until everyone is present.
D) Inhibit free discussion if it obviously contradicts what the leader knows to be true.
E) Keep a note of all action items, responsibilities assigned and decisions reached.