An administrator logs into a server and notices slow performance.  When the system finishes the logon process a message is displayed saying the system is out of Virtual Memory.  Which of the following is the MOST likely cause of this issue？（）

• A、The drives have been configured as basic.
• B、The system partition with the page file is out of space.
• C、The VMFS has bad sectors.
• D、The drivers for the memory have become corrupt.