Assertive behavior involves which of the following elements

A．Expressing an air of superiority.

B．Saying what is on your mind at the expense of others.

C．Avoiding unpleasant situations and circumstances.

D．Standing up for your rights while respecting the rights of others.

女，6岁。咽痛后出现颈部疼痛，活动受限，头部轻突向左歪斜，枕骨下方压痛。（）

A.肌性斜颈

B.骨性斜颈

C.颈椎自发性半脱位

D.颈椎结核

E.落枕