TOEFL Listening: TPO-TOEFL阅读TPO - V0Y8I707IR0HJZ05N$

According to paragraph 6, merchants were able to avoid the risk of carrying large amounts of gold and silver by A. using third parties in Marseille to buy goods for them B. doing all their business by using Dutch currency C. paying for their purchases through bills of exchange D. waiting to pay for goods until the goods had been delivered