Which of the Following Is a Suggestion to Avoid Distracting

Which of the following is a suggestion to avoid distracting the audience?

A) avoid picking up and manipulating objects such as pens, pointers, clips, etc.
B) Avoid obvious pacing, and don't hide behind the lectern
C) maintain good eye contact
D) avoid delivery that is too loud or too soft, too slow or in monotone
E) all of the above