A company wants a solution to consolidate their storage using the DS4000 series and implement a disaster recovery solution across two data centers linked by fibre to duplicate the production environment.The customer requires a solution with the least amount of system administration.  Which configuration would provide the best solution？（）

• A、Implement one DS4400 at each location connected to the fibre link and use Remote Volume Mirror （RVM）.
• B、Implement a DS4400 at each location using FlashCopy option and use host based replication to synchronize the sites.
• C、Implement a switched fabric using redundant SAN switches with a DS4300 using RVM option at each location.
• D、Implement a switched fabric using SAN switches connected via ISL with a DS4300 using RVM option at each location.