But for the heavy traffic, the police ___ the thieves who tried to escape in the stolen car.

A．would not catch

B．couldn’t have caught

C．haven’t caught

D．couldn’t catch

在搬运处理剂前不认真观察了解搬运路线，未将路线中的砖，石，工具等杂物清理干净，否则会导致什么后果？