Youareupgradingcomputer1andcomputer2fromWindowsNTWorkstation4.0toWindows2000Professional.Yousuccessfullyupgradethecomputer1.Duringtheupgradeofcomputer2,aseriesofpoweroutragesinterruptstheupgrade.Youdiscoverthatupgradeofcomputer2isincomplete.Furthermore,youfindthatcomputer2cannolongerrunWindowsNTworkstation4.0.Computer2doesnotsupportbootingfromWindows2000ProfessionalCD-ROM.Youdecidetousecomputer1tohelprecoverthefailedupgrade.Whatshouldyoudo？（）

A.Oncomputer1,copytheCD-ROMdriverandsystemfilesnamedntdetect,ntbootdd.sys,Ntdll.dllandSetupldr.bintoaformattedfloppydisk.Oncomputer2,restartthecomputerbyusingthefloppydisk.ThenrunWinNT32/debugfromtheWindows2000ProfessionalCD-ROM. B.Fromcomputer1,copytheCD-ROMdriverandsystemfilesnamedNtdetect,Ntbootdd.sys,Ntdll.dll,andSetupldr.bintoaformattedfloppydisk.Onthecomputer2,restartandupgradebyusingthefloppydisk.ThenrunWinNT32/rxfromtheWindows2000ProfessionalCD-ROM. C.Onthecomputer1,runMakebt32.exefromtheBootdiskfolderontheWindows2000 ProfessionalCD-ROM.Oncomputer2,restarttheupgradebyusingthenewlycreatedfloppydisks. D.Oncomputer1,performaremoteinstallationfromanetworkshare.Oncomputer2,whenthe textportionofsetuphascompleted,resumetheinstallationbyusingtheSetupManager.