—There's somebody at the door. Who _____ it be? Is it a postman?

—No, It _____ be him. It's just seven o'clock. It's too early. [ ]

A. may; can't

B. will; won't

C. may; must

D. must; may not

依据《行政处罚法》的规定，限制人身自由的行政处罚，只能由( )设定。

A．部门规章

B．地方性法规

C．行政法规

D．法律