Which factor will alter the physical datasize?

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A customer is using the FlashBlade as an image database backup/restore target. The dataset that they are backing up is 100TB. The customer has a 5-day snapshot retention policy, and an average of 50TB of data change from day to day.

Which factor will alter the physical datasize?
A . Erasure Coding
B. Write Size
C. RAID Overhead
D. Snapshot Retention

Answer: A