Which of the Following Statements Is Good Advice for a Speaker's

Which of the following statements is good advice for a speaker's use of movement?

A) Stay directly behind the podium at all times because it communicates stability to the audience.
B) Move around the room as much as possible, stopping only to mark transitions in the speech.
C) Keep one hand in your pocket to convey a sense of comfort and ease to the audience.
D) Move toward the audience to emphasize a point and promote a connection with your listeners.