You perform a Server Core Installation of Windows Server 2012 R2 on a server named Server1. You need to add a graphical user interface （GUI） to Server1. Which tool should you use？（）

• A、the dism.exe command
• B、the Add-WindowsFeature cmdlet
• C、the imagex.exe command
• D、the setup.exe command
• E、the ocsetup.exe command
• F、the Add-WindowsPackage cmdlet
• G、the Install-Module cmdlet
• H、the Install-RoleService cmdlet