Which procedure should be used to configure the system to prevent all users from using the ’at’ command()?
- ACreate a /var/adm/cron/at.allow file with no entries
- BCreate a /var/adm/cron/at.deny file with ’*’ as the only entry
- CCreate a /var/adm/at/at.deny file with ’ALL’ as the only entry
- DCreate a /var/adm/at/at.allow file with ’NONE’ as the only entry