which is the resulting behavior with vSphere HA enabled?

A VM-Host affinity rule states that VM group “X” must run on hosts in group “Y”.
If all ESXi hosts in group “Y” fail, which is the resulting behavior with vSphere HA enabled?

A.
The virtual machines in group “X” will failover to hosts that do not belong to group “Y”, but will vMotion back
to hosts in group “Y” when they become available.

B.
The virtual machines in group “X” will not failover to hosts that do not belong to group “Y”.

C.
This scenario is not possible because vSphere HA and DRS cannot work together.

D.
The virtual machines in group “X” will only fail over to hosts that do not belong to group “Y” if they are
marked as “High” VM Restart Priority within vSphere HA.