— Did you go to the open-air concert?

— No. We ____. but we spent too much time shopping. [ ]

A. could have gone                  

B. must have gone

C. can't have gone                  

D. shouldn't have gone

某单位进口小轿车10辆，每辆小轿车货价15万元，运抵我国海关前发生的运输费用、保险费用无法确定，经海关查实其他运输公司相同业务的运输费用占货价的比例为2％。关税税率为60％，应向海关缴纳关税税额为()。

A．9.21万元

B．90万元

C．91.8万元

D．92.08万元