What are the major differences between distributed storage and centralized storage?

What are the major differences between distributed storage and centralized storage?
A . The distributed architecture facilitates capacity expansion and reduction and eliminates data migration.
B . Distributed storage is applicable to cloud storage resource pools. content repository, archiving. and big data storage.
C . Distributed storage features high elasticity and scalability accelerating service rollout.
D . Distributed storage uses general-purpose servers as storage hardware for unified management

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Answer: ABC