Asystemadministratorhasatwo-diskvolumegroup(testvg)withonelogicalvolume(testlv)whichhasjustbeenmirroredacrossbothdiskdrives.Whichofthefollowingcommandscanbeusedtoturnoffquorum?()
A. chvg-Qntestvg
B. chlv-Qntestlv
C. varyoffvgtestvg;varyonvg-Qntestvg
D. varyoffvgtestvg;exportvgtestvg;importvg-Qntestvg;varyonvgtestvg