Your network contains a server that runs ISA Server 2006. The ISA Server provides reverse proxy services.
The network also contains a Web server that runs Internet Information Services (IIS). The Web server requires user authentication.
You need to configure the ISA Server to provide access to the Web server. You want to achieve this goal while meeting the following requirements:
Authenticates inbound traffic from applications that pass through the reverse proxy. Implements a two-factor authentication system for remote access to the Web server. Does not use Windows passwords for to remote access authentication. Prompts users for authentication only once per session. You create a Web listener. You create a Web publishing rule that publishes the Web server. How should you configure authentication for the Web listener and the Web publishing rule?

A.
Configure the Web listener to use RADIUS OTP as the authentication method for validating client credentials.
Configure the Web publishing rule to use NTLM authentication for authentication delegation.

B.
Configure the Web listener to use RADIUS OTP as the authentication method for validating client credentials.
Configure the Web publishing rule to use Kerberos constrained delegation for authentication delegation.

C.
Configure the Web listener to use Windows (Active Directory) as the authentication method for validating client credentials. Configure the Web publishing rule to use Basic authentication for authentication delegation.

D.
Configure the Web listener to use Windows (Active Directory) as the authentication method for validating client credentials. Configure the Web publishing rule to use NTLM authentication for authentication delegation.