Which technology is required when running a cluster with DRS and VMware HA?

Which technology is required when running a cluster with DRS and VMware HA?

A.
P2V Assistant

B.
VCB

C.
VMotion

D.
Virtual SMP

Explanation:
Resource Management Guide : Creating a VMware Cluster : Cluster Prerequisites

If you want to use DRS for load balancing, the hosts in your cluster must be part of a VMotion network.