You have a server named Server1 that has a Server Core installation of Windows Server 2008 R2.
Server1 has the DHCP Server server role and the File Server server role installed.
You need to upgrade Server1 to Windows Server 2012 R2 with the graphical user interface (GUI).
The solution must meet the following requirements:
Preserve the server roles and their configurations.
Minimize administrative effort.
What should you do?
A. On Server1, run setup.exe from the Windows Server 8 installation media and select Server with a GUI.
B. Start Server1 from the Windows Server 8 installation media and select Server Core Installation.When the installation is complete, add the Server Graphical
Shell feature.
C. Start Server1 from the Windows Server 8 installation media and select Server with a GUI.
D. On Server1, run setup.exe from the Windows Server 8 installation media and select Server Core Installation.When the installation is complete, add the Server
Graphical Shell feature.
