下列不属于急性胰腺炎体征的是（）

A.腹式呼吸减弱

B.肠鸣音活跃

C.移动性浊音（+）

D.Cullen征阳性

E.腹膜刺激征（+）

— Margaret ________ stay at home all day long in front of the computer.

— That's right. She should go to the fitness center with us. [    ]

A. doesn't have to  

B. couldn't

C. oughtn't to  

D. may not