以下支付方式对进口商的风险而言从大到小的排列顺序是（）。

A．D/A＞30%后T/T+70%L/C at sight＞D/P at sight＞装运前T/T

B．D/A＞D/P at sight＞30%后T/T+70%L/C at sight＞装运前T/T

C．装运前T/T＞D/P at sight＞30%后T/T+70%L/C at sight＞D/A

D．装运前T/T＞30%后T/T+70%L/C at sight＞D/P at sight＞D/A