A customer would like to buy a new Power 750 and attach 2 PCIe I/O drawers. What is the minimum configuration which will support this？（）

• A、One processor card and one GX+ expansion card
• B、Two processor cards and one GX++ expansion card
• C、One processor card， one GX+ expansion card， and one GX++ expansion card
• D、Two processor cards， one GX+ expansion card， and one GX++ expansion card