What is the meaning of the RETONLY parameter?
A. The number of days to retain a backup version after that version becomes inactive.
B. The maximum number of backup versions to retain for files that are currently on the client file system.
C. The maximum number of backup versions to retain for files that have been deleted from the client file system.
D. The number of days to retain the last backup version of a file that has been deleted from the client file system.