Which statement best describes the staging plan development service component within the
design phase?

A.
It provides a plan detailing the installation and service-commission requirement tasks to

be staged in a controlled implementation environment that emulates a customer network

B.
It assesses the ability of the site facilities to accommodate the proposed infrastructure.

C.
It includes the development and execution of pro of-of-concept tests, validates the
infrastructure high-level design, and identifies any design enhancements

D.
It helps improve the performance and functionality of the infrastructure operations and
network management system.