单项选择题Asystemadministratorneedstoreplaceamirroreddisk.Afterperformingtheproperremovalprocessandreplacingthedisk,whichofthefollowingsetofcommandsshouldbeperformedtobringthediskbackintoproduction?()
A. reboot, mklvcopy, syncvg
B. cfgmgr -vl ssar, chvg -va, syncvg
C. cfgmgr, extendvg, syncvg
D. extendvg, mklvcopy, syncvg