Why do people sometimes need to express their feelings or emotions?
选项：

A:I guess everyone camouflages his or her true identity and hides behind a certain persona. The longer you disguise your emotions behind this persona. The more comfortable it will become to behave in a certain way. Yet the id will be unleashed every now and then for you to let off some steam. So people express their emotions to rebel the persona and rip the camouflage.
B:none
C:none
D:none