When planning OceanStor unified storage array synchronous remote replication, which of the following description is correct? (Multiple choice)

When planning OceanStor unified storage array synchronous remote replication, which of the following description is correct? (Multiple choice)
A . under the scene that the actual RPO index requirement is zero, you can select the synchronous remote replication function
B . synchronous remote replication can use the project of mapping the LUN of the primary side and slave side to the host to create a mirrored volume to replace
C . synchronous remote replication can also meet the disaster recovery demand of remote distance
D . Because synchronous remote replication does not use snapshot, so after synchronous remote replication abort, when recovering, all the data of the master terminal LUN will reinitialize and sync to the slave terminal

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Answer: AB