What condition could cause this behavior?

A vSphere administrator notices that hosts are not powering off when the total cluster load is low on
a cluster configured with Dynamic Power Management.
What condition could cause this behavior?

A.
The DRS migration threshold is set to the most conservative setting.

B.
The DRS migration threshold is set to the most aggressive setting.

C.
The DPM migration threshold is set to the most conservative setting.

D.
The DPM migration threshold is set to the most aggressive setting..