Owing to your cooperation in negotiations on price and terms and

Owing to your cooperation in negotiations on price and terms and conditions, we have _______ a transaction.
A、handled
B、deal
C、arrived
D、concluded
【正确答案】：D
【题目解析】：A:处理  B:协议  C:到达  D:得出结论 
句意：由于你方在价格和条件谈判中的合作，我们达成了一笔交易。