What function does Enhanced vMotion Compatibility provide?

What function does Enhanced vMotion Compatibility provide?

A.
The ability to use vMotion to migrate virtual machines between ESXi hosts with different

CPU vendors.

B.
The ability to replace manual CPU identification masks with an automated process
managed by the cluster.

C.
The ability to enable Fault Tolerance on virtual machines that are not members of a
cluster.

D.
The ability to use vMotion to migrate virtual machines between hosts with identical CPUs
but different vSphere versions.