From the following answer choices, pick the statement that is not correct description of supply chain management and logistics ( )
选项：

A:Different management levels, logistic is operational level management
B:With different business scope, logistics is conducted within the management scope of the enterprise itself, with a low degree of complexity
C:All the business within a supply chain is an indivisible whole
D:The business focus is different. Logistics focuses on the physical flow of materials