What is the most effective way a company can protect their N-Series and NetApp against data loss?

A.
use Filer Snapshots for long term protection

B.
use full network data management protocol (NDMP) backup weekly and NDMP backup daily

C.
use NDMP backup or incremental backup daily and NDMP SnapMirrorto Tape weekly

D.
use IBM Tivoli Storage Manager backup with the SnapDiff function and additional weekly backups
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