Which definition best describes the staging plan development service component within the design phase?
A.
helps improve the performance and functionality of the infrastructure operations and network management system
B.
assesses the current state of the operations and network management infrastructure of the customer, including people, processes and tools, to identify issues and opportunities
C.
provides a step-by-step plan detailing the installation and service-commission requirement tasks to be staged in a controlled implementation environment that emulates a customer network
D.
includes the development and execution of proof-of-concept tests, validates the infrastructure high-level design, and identifies any design enhancements
E.
helps improve the infrastructure security system of the customer
F.
assesses the ability of the site facilities to accommodate the proposed infrastructure