— ______ that new bike over there?

— I think it's ______. [ ]

A. Who's, Sam

B. Who's, Sam's

C. Whose is, Sam

D. Whose is, Sam's

隋唐以后，中央机构三省六部中的三省指的是（）。

A.中书省、门下省、尚书省

B.中书省、元外省、门下省

C.门下省、尚书省、元外省

D.元外省、中书省、尚书省