According to the terms of the contract the shipment is to be eff

According to the terms of the contract the shipment is to be effected by the 20th June and we must have the Bs/L by the 25th at the latest.
A、按合同条款,6月20日前应交货,我们最迟需在25日前拿到提单。
B、按合同条款,6月20日应交货,我们最迟需在25日前拿到提单。
C、按合同条款,6月20日前应交货,我们最多退迟到25日拿到提单。
D、按合同条款,6月20日应交货,我们最多退迟到25日拿到提单。
【正确答案】:A
【题目解析】:p182