Which of the following statements is true regarding journals of a GFS2 filesystem?
A. Each GFS2 filesystem has exactly one journal
B. Once a GFS2 filesystem is created, the number of journals cannot be changed.
C. Every node that simultaneously mounts the filesystem requires its own GFS2 journal.
D. Journals were heavily used in GFS and are deprecated and optional in GFS2.
E. The GFS Cluster Journal Daemon, GCJD, handles the journaling in a GFS2 cluster.
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