How would you install the graphical user interface (GUI) to this server?

You have a single server that has a Server Core Installation of Windows Server 2012 R2.
How would you install the graphical user interface (GUI) to this server?

A.
You should use Windows PowerShell to run the Enable-NetFirewallRule command.

B.
You should use Windows PowerShell to run the Add-WindowsPackage command.

C.
You should use Windows PowerShell to run the Install-WindowsFeature command.

D.
You should use Server Manager console on to add the User Interfaces.

E.
You should use Server Manager console to add the Infrastructure feature.

F.
You should use Server Manager console to add the Windows feature.

Explanation:
References:
http://technet.microsoft.com/en-us/library/jj574205.aspx