In Huawei Cloud Stack, which of the following descriptions about unified backup management is incorrect?

In Huawei Cloud Stack, which of the following descriptions about unified backup management is incorrect?
A . Under unified backup management, public components and FusionSphere are connected to the ManageOne operation and maintenance plane through Service OM.
B . Unified backup management supports backing up public components, FusionSphere, FusionStorage, CloudDB, and CloudMiddlelare data to the SFTP server
C . Unified backup management can simplify backup operations. There is no need to log in to each cloud service interface for backup, reducing operating hours.
D . Under unified backup management, Huawei distributed storage connects to the ManageOne operation and maintenance plane through BCM

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Answer: D