The account team is putting together a very complex solution for the customer. During the solution design phase， many of the customer’s requirements have changed and additional requirements are being identified. What should the pSeries technical specialist do to ensure the greatest possible customer satisfaction？（）
A、Use eConfig to configure and validate each pSeries and p5 system.
B、Engage Advanced Technical Support to review any outstanding technical issues.
C、Confirm with the customer that the solution design meets their requirements.
D、Perform a Pre-Install Solution Assurance Review to validate required power requirements.
