问题：

[单选题]Which non-verbal way of interruption is improper?RTG答案窝(daanwo.com)-大学作业答案分享平台
AHand gestures.RTG答案窝(daanwo.com)-大学作业答案分享平台
BRaise your voice.RTG答案窝(daanwo.com)-大学作业答案分享平台
Clear your throat.RTG答案窝(daanwo.com)-大学作业答案分享平台
DMake eye contact with the speaker.