单项选择题

A.Metro MirrorB.FlashcopyC.Global MirrorD.SnapshotAcust……

A customer requires an infrastructure to support disaster recovery of critical applications between two remote datacenters one in Tokyo and one in Beijing. The customer’s Recovery Point Objective （RPO） necessitates a six-hour window for a bandwidth of 100MB/s and a new Storage System for a total of 4TB of data. They estimate 100MB of new data produced hourly. What data synchronization method would be recommended to meet the requirements？（）

A.Metro Mirror
B.Flashcopy
C.Global Mirror
D.Snapshot

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