An administrator requires that the vCenter Server Appliance is highly available. Which solution can be utilized to achieve this?

A.
vCenter Server Heartbeat

B.
vSphereHA

C.
vSphere FT

D.
Host Based Replication

Explanation:
http://up2v.nl/2011/07/12/vmware-vcenter-server-appliance/ (3rd paragraph not counting the single line paragraph in the middle)