Chapter 9: What is a lean warehouse? When are they used? A. Lean warehouses have items moving more slowly through inbound and outbound warehouses and distribution centers. This means higher lot sizes and shipping quantities, greater emphasis on crossdocking, increased automation, and increased assembly operations. B. Lean warehouses have items moving more quickly through inbound and outbound warehouses and distribution centers. This means reduced lot sizes and shipping quantities, greater emphasis on crossdocking, increased automation, and increased assembly operations. C. Lean warehouses have items moving more quickly through inbound and outbound warehouses and distribution centers. This means large lot sizes and shipping quantities, greater emphasis on crossdocking, increased automation, and increased assembly operations. D. Lean warehouses have items moving more quickly through inbound and outbound warehouses and distribution centers. This means increased lot sizes and shipping quantities, greater emphasis on crossdocking, increased automation, and increased assembly operations