TheadministratorwantstobackuptheexistingVIOserversoftwareanditscurrentconfigurationbeforeapplyinganupdate.WhatcommandwilltheadministratorusetobackuptheVIOserversoftwaresothatthebackupcanberestoredfromaNetworkInstallationManager（NIM）serveroraHardwareManagementConsole（HMC）？（）
A.mksysb-tvio/mountpoint
B.backupios-file/mountpoint
C.mksysb-i/mountpoint/vio.mksysb
D.backupios-mksysb-file/mountpoint/vio.mksysb