Company.comhasathree-nodeclusterwithsixresourcegroups.Therearetworesourcegroupsforeachnode.Anewhardwarecomponentwillbeaddedtooneofthenodes.Thecustomerwantstomovetheresourcegroupstoothernodes，butnotnecessarilyinthenormalfalloverorder.Also，theresourcegroupsmustbemovedatnightwhenthereisnooneinthecomputercenter.Whatcanbedonesothattheresourcegroupismovedatthemostconvenientnormalfalloverorder.Also，theresourcegroupsmustbemovedatnightwhenthereisnooneinthecomputercenter.
Whatcanbedonesothattheresourcegroupismovedatthemostconvenienttimeforthecustomer？（）
参考答案：C
