An administrator is upgrading two ESX 3.5 Hosts using the vSphere Host Update Utility. A second
administrator launches the utility, intending to upgrade the first host. Which of the following is true
about this scenario (Choose Two)?

A.
The vSphere Host Update Utility will indicate that the existing upgrade is in process and abort

B.
The vSphere Host Update Utility will not show that an upgrade is already in progress

C.
Performing upgrades on multiple hosts simultaneously is not supported

D.
Multiple simultaneous upgrades are supported, but only in deployments with 10 or fewer hosts