Which of the following statements is true of interpreting the body language?
选项：

A:Someone who have their arms and legs uncrossed are shy and introvert.;
B:If the person is leaning toward you, he could be interested in your conversation and actively engage in.;
C:If the person easily distracted by other things, you should speak louder to draw his attention.;
D:Once you start talking, you needn’t watch listener’s body language or pay attention to whether they appear comfortable or not.