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.