The account team designed a p5-570 solution to strategically position the customer for future IBM announcements.  The customer was dissatisfied upon implementing the solution.  An AIX v5.1 partition was added to the requirements halfway through the solution design process and it was not considered in the final design. What should the pSeries technical specialist have done to prevent this situation？（）

• A、Submitted an RPQ （Request for Quote） for AIX v5.1 support on a p5-570
• B、Designed a p670 because it supports AIX 5.1 partitions
• C、Initially designed a solution supporting AIX 5.1 partitions
• D、Gained customer approval for the final design prior to ordering the system