Incremental backup does

  1. Copies all files that are selected for backup

  2. Copies every file on the system that was modified or added since the previous backup, keeping the archive bit switch on

  3. Copies every file on the system that has archive bit switched on, and switch off the archive bit after the backup is complete

  4. Copies all the files that have been generated since the last backup


Correct Option: C

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