Which of the Following Statements Is Not True About Vocal

Which of the following statements is not true about vocal qualities?

A) Koreans are more concerned with measuring their words carefully so as not to offend.
B) Egyptians use phrases that reflect a colorful and emotional stance toward others.
C) Muslim cultures often desire to create a sense of warm friendship and personal relations, and use the voice to convey this.
D) Koreans tend to think that a slow voice is more effective in increasing the credibility of the speaker.
E) Americans perceive that a relatively slow voice conveys power and competence.