You'd better ____ how much the trip will cost to see if we are able to pay for it. [ ]

A. sort out

B. add up

C. figure out

D. come up

抵押权登记日期为（）。

A.登记申请日期

B.登记审批日期

C.登记证书打印日期

D.登记证书交付申请人日期