Which of the following backup methodologies would be most efficient in backing up a database in the production environment?

Which of the following backup methodologies would be most efficient in backing up a database in the production environment?
A . Disk mirroring of the data being stored on the database.
B. A differential backup that is performed on a weekly basis.
C. An array of independent disks used to back up the database.
D. An incremental backup of the database on a daily basis.

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Answer: D