确认订单的常用表达 — 国际贸易选择题
题目
卖方收到买方Order No. 318后拟函确认接受，以下句子草拟于确认函开头，哪一项在确认订单的常用表达中既礼貌又准确？
A. We are pleased to confirm receipt of your Order No. 318 and accept it subject to our usual terms.
B. Your Order No. 318 has been thrown away because the price is too low.
C. We maybe confirm your Order No. 318 sometime later if possible.
D. Confirming your order is not our duty, so please wait.
（要求：表达须明确表示接受、提及订单编号、并符合商务函电礼貌规范）