Which environment will yield the optimal data deduplication for backup purposes?

A.
Virtualized environment where O/S images are stored in a SAN environment and backed up
and retained for 3-6 months

B.
Database environment where large transaction logs are backed up on a daily basis and stored
for one month

C.
An advertising organization where multimedia files are backed up and stored indefinitely

D.
Hospital environment where compliance requires patient information (CAT scans, MRI, x-rays)
to be backed up, stored, and accessible for up to 10 years

Explanation: