What happened to businesses after the mass move

A．They established branches in suburbs.

B．They scattered here and there in cities.

C．Some bigger companies moved out.

D．They lost many employees.

某外贸生产企业按合同如期完成链条生产订单后，跟单员赵刚以下列资料准备订舱：每个木箱尺寸为27厘米×27厘米×27厘米，毛重为35千克，共有1060箱。根据以上资料，赵刚应该选择何种规格（尺寸和载重）的集装箱最为经济？为什么？（列出计算步骤，否则不得分）