Your network contains an Active Directory domain named contoso.com. All servers run Windows Server 2012 R2. The functional level of both the domain and the forest is Windows Server 2008 R2. The domain contains a domain-based Distributed File System (DFS) namespace that is configured as shown in the exhibit.
You need to enable access-based enumeration on the DFS namespace.
What should you do first?
A. Raise the domain functional level.
B. Raise the forest functional level.
C. Install the File Server Resource Manager role service on Server3 and Server5.
D. Delete and recreate the namespace.