According to the passage, which of the following is CORRECT about sleepwalking？A．It is cau

According to the passage, which of the following is CORRECT about sleepwalking？

A．It is caused by emotional conflict.

B．It is the acting out of a vivid dream.

C．Somnambulists are asleep during their sleepwalking.

D．It is dangerous to waken a sleepwalker.

请帮忙给出正确答案和分析，谢谢！