In the plan phase， network readiness assessment addresses which customer need？ Select exactly 1 answer（s） from the following：（）。

• A、an assessment of the preparedness of the customers existing system infrastructure to support a propose solution
• B、a comprehensive design that has been customized based on the operations processes， network management processes， and tools of its system
• C、an in-depth assessment of the operational environment required to support the operation of both the current and planned solutions
• D、the optimal technologies for supporting its business requirements and objectives