问题详情

What the author mainly intends to tell us is that ______.
A．one"s sleeping position has something to de with one"s character
B．everyone has got both real and secret personalities
C．the position in which one goes to sleep is the most important one
D．when awake, one does not show one"s secret personality请帮忙给出正确答案和分析，谢谢！