One of Your Partner Organizations Currently Has to Provide Logon

Multiple Choice

One of your partner organizations currently has to provide logon credentials to access critical applications on your extranet's web site.While this has worked in the past,a recent meeting has brought to light the need for single sign-on capabilities for the website.
After researching the issue,you discover that one of Windows Server 2008's new Active Directory roles can help solve the problem.Which of the following answers allows you to create a trust relationship between your extranet and your partner organization?

A) Active Directory Federation Services (AD FS)
B) Active Directory Lightweight Directory Services (AD LDS)
C) Active Directory Rights Management Services (AD RMS)
D) Active Directory Advanced Integration Services (AD AIS)