What are the possible roles that can be assigned when deploying a vRealize Operations appliance? (Choose the best answer.)

A. Master, Master Replica, Data, Remote Collector

B. Master, Analytics, Remote Collector, Child
C. Master, Backup, Analytics, Remote Collector
D. Parent, Child, Remote Collector

Reference http://pubs.vmware.com/vrealizeoperationsmanager-6/topic/com.vmware.ICbase/PDF/vrealize-operations-manager-60-vapp-deploy-guide.pdf (p.10)