What is the primary difference between a network diagram and a data flow diagram?
选项：

A:A network diagram illustrates the relationship between components, while a data flowDiagram depicts the flow of specific types of data.
B:A network diagram depicts the flow of specific types of data, while a data flow diagram depicts the relationship between components.
C:A network diagram does not indicate the direction of data flow.
D:A data flow diagram does not depict network access controls.