During a planning session， the customer indicates the need to provide high availability between a  Node attached to an IBM TotalStorage Enterprise Storage Server and a remote node attached to a IBM TotalStorage FAStT server with automatic fallover in the event of a disaster.  Which of the following HACMP options will provide this functionality？（）  

• A、 GeoRM
• B、 HACMP/XD://PPRC
• C、 HACMP/XD://GPFS
• D、 HACMP/XD://HAGEO