You have a computer that runs Windows XP Service Pack 3 (SP3). The computer is a member of an ActiveDirectory domain. Several domain users log on to the computer. You plan to  install Windows 7 on thecomputer. You need to ensure that all user settings are preserved after the installation.  What should you do?（）

• A、Run Loadstate.exe， install Windows 7， and then run Scanstate.exe.
• B、Run Sysprep.exe /audit， install Windows 7， and then run Sysprep.exe /oobe.
• C、Run Windows Easy Transfer， install Windows 7， and then run Windows Easy Transfer again.
• D、Create a backup of %systemdrive%/documents and settings， install Windows 7， and then restore thebackup.