In the implement phase, staging involves installation and testing the customer’s solution components in a non-production lab environment. Which of the following defines the benefit to the partner ?

A.
Proper migration allows the customer to adopt the new hardware or software solution without an unacceptable disruption of their network services

B.
Staging a validates that the system is operational to the customer and provides the customer with increased confidence in the implemented system.

C.
Staging validates the system and proactively identifies and resolves any network implementation issues. It demonstrates to the customers that the partner will deploy a quality network in an efficient manner and mitigates risk that the incorrect software or hardware is delivered to the installation site

D.
A Properly planned and executed Day 1 support plan improves the customer’s and their end-users satisfaction with the implemented solution.