When planning an OceanStore Unified Storage Array synchronization remote replication, which of the following description is correct. (Multiple choice.)

When planning an OceanStore Unified Storage Array synchronization remote replication, which of the following description is correct. (Multiple choice.)
A . In the scenario where the actual RPO indicator requires zero, you can choose to synchronize remote replication.
B . Synchronous remote replication can be used to map the main and secondary storage of the two sets of LUN mapping to the host to create a scenario volume.
C . Synchronous remote replication on the remote disaster recovery can bewell done.
D . Because synchronous remote replication does not use snapshots, after synchronous remote replication is interrupted abnormally, the data on the primary LUN needs to be resumed in reply.Start synchronization to the slave site.

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Answer: A,B