Which statement best describes how Time Machine stores files from an OS X computer when backing up to an external hard drive connected via FireWire?
A. Each file is rewritten to the external disk during each backup.
B. Each file is saved to the external disk once. File changes are stored in a database on the external disk.
C. Each file is saved to the external disk once. Files that don’t change between backups are represented by symbolic links to save space.
D. Each file is saved to the external disk once. Files that don’t change between backups are represented by hard links to save space.
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