You manage a SQL Server Reporting Services (SSRS) instance.
An application must pass credentials to the local security authority for Reporting Services.
You need to configure Reporting Services to issue a challenge/response when a connection is made without credentials.
Which authentication type should you configure in the RSReportServer.config file?

A.
RSWindowsKerberos

B.
RSWindowsNegotiate

C.
RSWindowsNTLM

D.
RSWindowsBasic

Explanation:
Ref: http://msdn.microsoft.com/en-us/library/ms157273.aspx