You need to back up your Encrypting File System (EFS) certificate. You must achieve this goal in theminimum amount of time. 
	What should you do?()
	A.Run Cipher.exe /x.
	B.Run Ntbackup.exe /p.
	C.From Backup and Restore,click Back up now.
	D.From Backup and Restore,click Create a system image.
 
                            