An internal user has deleted a file named， pagefile.sys and is concerned this deletion may affect the computer. The user should be instructed to：（）

• A、reboot the computer because Windows automatically generates a new page file.
• B、add a new hard drive， format the drive and install Windows.
• C、back up all data， reboot the computer and notify a desktop technician.
• D、reformat the hard drive and reinstall Windows.