Regarding planning and design tools, which of the following statements is incorrect?

Regarding planning and design tools, which of the following statements is incorrect?
A . The planning and design tool is used for after-sales planning and cannot be used before sales.
B . If the device model cannot be used, you can provide feedback in the tool platform
C . Tools can ensure the logical consistency and data consistency of the design
D . If the networking changes greatly or changes frequently, old projects can be retained and new projects can be designed.

Answer: A