Which option best describes the high-level design document?

Which option best describes the high-level design document?
A. It includes specific information such as hardware models, software versions, IP addressing, and routing protocols.
B. It contains the test plan to certify that the customer’s network is ready for use.
C. it contains the steps needed to install and configure the network equipment and the steps that verify basic network operation.
D. it includes business and technical requirements and the proposed network architecture.