—On which day shall we go outing in the Qiagling Mountains, Friday, Satutiby or Sunday?

—     is all right.

A．Either

B．Both

C．All

D．Any

载货汽车和大型、中型非营运载客汽车超过10年的，每（）个月检验1次。

A.12

B.3

C.4

D.6