Which two conditions would account for this behavior?

An administrator determines that when a host residing in a High Availability (HA) cluster fails, the
virtual machines fail to restart on a remaining host, or will only restart after a long delay.
Which two conditions would account for this behavior? (Choose two.)

A.
The virtual machines were not protected by vSphere HA at the time the failure occurred.

B.
Distributed Resource Scheduler was not enabled at the time the failure occurred.

C.
There is insufficient spare capacity on hosts with which the virtual machines are compatible.

D.
The virtual machines contain physical Raw Device Mappings.