everalpeopleinanfinancecustomerITdepartmentareaskingforfilesetupdatesthatthesystemadministratorreceivedfromIBMearlierthatdayonCD-ROM.Thesystemadministratorcreatedaninstalldirectoryontheirmachineandmadeitavailabletoeveryone.WhichofthefollowingcommandswillallowthesystemadministratortocopytheimagesfromanIBMupdateCD-ROMtotheinstalldirectory（）
A.smitbffcreatefromthetargetdirectory
B.tar-xvf\/dev\/cd0fromthetargetdirectory
C.restore-xvqf\/dev\/cd0fromthetargetdirectory
D.mountthecdromon\/cdromandruncp\/cdrom\/*.fromthetargetdirectory
参考答案：A
