Your network contains a server that runs Windows Server 2008 R2. The server has Microsoft SharePoint Foundation 2010 installed.
You create a new Web application named WebApp1.
You need to configure WebApp1 to meet the following requirements:
Internal users must be authenticated by using Kerberos authentication.

External users must be authenticated by using NTLM authentication.

What should you do first?

A.
Extend WebApp1.

B.
Modify the User Policy.

C.
Modify the Permissions Policy.

D.
Configure the Alternate Access Mappings.