Part of the reason for the drop in sales is ________ from overse

Part of the reason for the drop in sales is ________ from overseas suppliers.
A、virtues
B、competition
C、security
D、assumption
【正确答案】：B
【题目解析】：virtues优点，贞操；美德；competition竞争；security安全；assumption假设，设想
句意：销售额下降的部分原因是来自海外供应商的竞争。