An administrator is having a problem configuring Storage I/O Control on a Datastore. Which two conditions could explain the issue? (Choose two.)
A. A host is running ESXi 4.0.
B. An ESXi host does not have appropriate licensing.
C. The vCenter Server version is 5.0.
D. The vCenter Server License is Standard.
The following reasons might prevent you from enabling Storage I/O Control on a datastore.
At least one host that is connected to the datastore is not running ESX/ESXi 4.1 or later.
You do not have the appropriate license to enable Storage I/O Control.