Which two options can be used for vCenter Server 6.x database availability? (Choose two.) 

Answer options:

A. Microsoft SQL Server 2012/2014 AlwaysOn Availability Groups (AG)
B. vCenter Server Watchdog
C. NSX load balancer
D. vCenter Server Heartbeat
E. Microsoft Windows Server Failover Clustering

BE

Reference: https://kb.vmware.com/s/article/1024051