An administrator created a JFS2 snapshot and mounted it using the following commands:
Snapshot-o snapfrom=/home/adminfh-o size=1G
Mount-o snapshot /dev/fslv16 /backup
Backup was started using a script. After an hour the administrator lists the backup directory
and received the following error message:
Is: /backup: There is an input or output error.
What is the most likely reason?

A.
The snapshot ran out of space and is now invalid.

B.
Backup directories are locked during snapshot operations.

C.
The incorrect command was used to list the backup directory.

D.
Filesystem write operations were improperly suspended prior to taking the snapshot.