A customer wants to deploy VMWare ESX on four-way Intel systems.  They are considering IBM and Dell.Which of the following is an advantage IBM has over the competition？（）

• A、IBM provides optional Remote Technical Support for hardware， NOS， and VMWare.
• B、The IBM xSeries EXA chipset has extensions to provide better efficiency for the VMFS file system.
• C、IBM servers can address larger LUNs on SAN storage than Dell.
• D、IBM provided VMWare with the majority of their internal drivers for ESX.