You maintain a SQL Server 2008 Reporting Services (SSRS) instance.
The network security model for the domain that hosts the instance changes.
You need to ensure that the instance will only support Kerberos authentication.
What should you do?

A.
Edit the RSReportServer.config file.

B.
Edit the rssrvpolicy.config file.

C.
Edit the Site Settings of the instance by using the Report Manager.

D.
Edit the Server Settings by using Microsoft SQL Server Management Studio (SSMS).