You are creating an ASP.NET Web site. The site contains pages that are available to anonymous users. The site also contains a page named Premium.aspx that provides premium content to only members of a group named Subscribers. You need to modify the web.config file to ensure that Premium.aspx can be accessed by only members of the Subscribers group. Which configuration should you use？（）
- A<location path="Premium.aspx"> <system.web> <authorization> <allow users="Subscribers"/> <deny users="*"/> </authorization> </system.web> </location>
- B<location path="Premium.aspx"> <system.web> <authorization> <allow roles="Subscribers"/> <deny users="*"/> </authorization> </system.web> </location>
- C<location path="Premium.aspx"> <system.web> <authorization> <allow roles="Subscribers"/> <deny users="?"/> </authorization> </system.web> </location>
- D<location path="Premium.aspx"> <system.web> <authorization> <deny users="*"/> <allow roles="Subscribers"/> </authorization> </system.web> </location>