You are the administrator for a nationwide company with over 5,000 employees. Your director tells you your company has just signed into a partnership with another organization, and that you will be responsible for ensuring that authentication can occur between both organizations without the need for additional sign-on accounts. Your boss mentions that the partner has a variety of Directory Services installed throughout their organizations. Which of the following can Active Directory Federation Services NOT connect to?

A.
Lightweight Directory Services

B.
Windows Server 2003 Directory Services

C.
Windows Server 2003 R2 Directory Services

D.
All of the above