An administrator would like to enable operators to list the submission times of all crontab files, but
not to edit them. How can this be accomplished?

A.
Enable them to use the crontab command with Role Based Access Control (RBAC)

B.
Enable them to use the cronadm command with SUDO.

C.
Enable them to view the /var/spool/cron/log file with unix file permissions.

D.
Enable them to use the Iscrontab command by adding them to the system group.

Explanation: