You network contains 500 computers. You have a computer that runs Windows XP Professional. The computer is used to perform application testing and has Internet Information Services (IIS) installed. The computer has a group named Developers. You need to ensure that only the members of the Developers group can access the Web site.  Which two configuration changes should you perform?（）

• A、Modify the properties of the Developers group. 
• B、Modify the NTFS permissions of the %systemroot%/inetpub/wwwroot folder.
• C、From the properties of the default Web site, assign an SSL certificate. 
• D、From the properties of the default Web site, modify the Authentication Methods.