You are halfway through a major network rollout. There are 300 locations in the United States with another 20 in England. A software seller has just released a major software upgrade for some of the equipment being installed. The upgrade would provide the customer with functionality they requested that was not available at the time the project began. What is the BEST course of action under these circumstances?
A、Continue as planned, your customer has not requested a change.
B、Inform the customer of the upgrade and the impacts to the project's timeline and functionality.
C、Implement the change and adjust the schedule as necessary because this supports the customer's original request.
D、Implement the change to the remaining sites and continue with the schedule.