Your network contains an Active Directory domain. The domain contains domain controllers that run Windows Server 2008 R2. A domain controller named DO has Active Directory Federation Service (AD FS) 1.0 installed.
You have a deployment of Dynamics CRM 2015.
You plan to implement an Internet-facing deployment.
You need to update the domain to support the planned implementation. You must achieve the goal in the least amount of time possible.
What should you do?
A. Install Windows Server 2012 on a new server, and then add the Active Directory Federation Services server role.
B. Upgrade DC1 to Windows Server 2012.
C. Uninstall AD FS 1.0 from DC1, and then install AD FS 2.0 on DC1.
D. Install AD FS 2.0 on DC1.
