You have a computer that runs Windows XP. The computer has one partition. You install Windows 7 on thecomputer. You need to migrate a user profile from the Windows XP installation to Windows 7 installation. What should you do first?（）

• A、From Windows 7, run Scanstate.exe /offlineWinOld:c:/windows.
• B、From Windows 7, run Scanstate.exe /offlineWinOld:c:/windows.old.
• C、At the command prompt, run Xcopy /s /e c:/windows/users/*.* c:/users/.
• D、At the command prompt, run Xcopy /s /e c:/windows.old/documents and settings/*.* c:/users/.