单项选择题

A.(1620×10)/(1+17%)=13846.15(元)
B.1620×10=16200(元)
C.1620×10-(1620×5×20%)-(1620×6×60%)=9720(元)
D.[1620×10-(1620×5×20%)-(1620×5×60%)]/(1+17%)=8308(元)