What are three possible causes for the problem?

The installation of the IaaS components fails with the following error. The IaaS installer
failed to save the Model Manager Data and Web components What are three possible
causes for the problem? (Choose three.)

A.
The .NET Framework 3.5 Feature is not installed on the target server.

B.
The installation is being attempted on an unsupported operating system.

C.
Trusted certificate issues between the vCloud Automation Center appliance and the
Identityappliance.

D.
Connectivity issues to the vCloud Automation Center appliance.

E.
The Repository Service failed to start on the IaaS server.