Which of the following statements about body language is true? a) customers look away from salespeople while they actively consider information in a sales presentation. b) voice characteristics account for a greater percentage of messages received than body language in face-to-face communication. c) broad, vigorous arm gestures indicate a lack of interest in the point being communicated verbally. d) a person rocking from side to side is conveying a positive outlook. e) hand gestures have the same meaning in all cultures.