12即貨船上無裝卸貨物之設備，而將貨櫃裝載於特定之卡車拖車(trailer)上，經岸上所架之跳板(ramp)駛進船艙，為何種運輸方式? (A)駛進駛出(rollon/rolloff，RO/RO) (B)子母船(lighter-aboardship,LASH) (C)吊上吊下(lift-on/lift-off) (D)浮進浮出型(Floaton/Floatoff)