You are designing an ASP.NET Web application.
The Web application must allow users to authenticate by using LDAP on a Web form.
You need to recommend an authentication model.
What should you recommend?

A.
Change the authentication mode to Forms authentication, and use the ActiveDirectoryMembershipProvider class.

B.
Change the authentication mode to Windows authentication, and use the ActiveDirectoryMembershipProvider class.

C.
Change the authentication mode to Windows authentication, and implement a custom authentication provider.

D.
Change the authentication mode to Forms authentication, and use the ClientWindowsAuthenticationMembershipProvider class.

Explanation:
ActiveDirectoryMembershipProvider
Manages storage of membership information for an ASP.NET application in Active Directory and Active Directory Application Mode servers.
http://msdn.microsoft.com/en-us/library/system.web.security.activedirectorymembershipprovider.aspx