A customer has many remote sites with limited bandwidth and fewer than five servers in those locations. The customer likes to back up the servers in these remote sites to their central data center. The customer is looking at various deduplicationbased backup applications and has asked you to explain what makes EMC Avamar a better fit for the environment that has bandwidth limitations.
Which EMC Avamar design feature addresses the customer’s question?

A.
EMC Avamar breaks a file into fixed blocks and sends only the unique changed blocks across the environment to the backup server

B.
EMC Avamar breaks a file into multiple variable blocks and sends only the unique changed blocks across the environment to the backup server

C.
EMC Avamar keeps a local copy of the backup data in the cache file and communicates with the server only when needed

D.
EMC Avamar uses secure 128bit AES encryption that secures data and optimizes the bandwidth