A customer asks the pSeries technical specialist to recommend which remote access （SSH or Telnet） method to use.  What question should the customer be asked to best determine the proper recommendation？（）

• A、Is there a need for a PKI Management System？
• B、Is there a need for end-to-end encryption？
• C、Do they currently have a Kerberos domain in place？
• D、Which clients are installed on their desktops -- SSH， Telnet or both？