I walked slowly through the market, where people（）all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.

A. sell

B. were selling

C. had sold

D. have sold

一定时期内，企业在物流活动中负债融资所发生的利息支出属于（）

A．物流管理成本

B．物品损耗成本

C．资金占用成本

D．保险和税收成本