Your network contains two servers named Server1 and Server2 that run Windows Server 2008 R2. Server1 has Active Directory Federation Services （AD FS） 2.0 installed. Server1 is a member of an AD FS farm. The AD FS farm is configured to use a configuration database that is stored on a separate Microsoft SQL Server. You install AD FS 2.0 on Server2. You need to add Server2 to the existing AD FS farm. What should you do（）
- AOn Server1， run fsconfig.exe.
- BOn Server1， run fsconfigwizard.exe.
- COn Server2， run fsconfig.exe.
- DOn Server2， run fsconfigwizard.exe.