Tietze病是指（）

A.非特异性肋软骨炎

B.肋骨结核

C.肋骨骨髓炎

D.肋骨纤维结构不良

E.肋软骨肉瘤

—Why are your eyes so red? You _______ have slept well last night.

—Yeah, I stayed up late writing a report.

A．can’t

B．mustn’t

C．needn’t

D．won’t