The output of crontab -l contains the following job definitions:
MAILTOfirstname.lastname@example.org,email@example.com 0 0,12 1 */4 * df -h / @hourly du -h / >> /var/log/disk_usage 0 6 1-12 * * /usr/bin/testdome_candidates
Select the statements about the job definitions and schedules that are correct.
(Select all acceptable answers.)
The df command is executed at midday and midnight on the first day of every 4th month.
The df command is executed 12 times, each hour, between midday and midnight on the 1st of April.
The MAILTO variable tells cron to email the output of df -h / to firstname.lastname@example.org and email@example.com.
Every hour of every day the current disk usage is appended to the /var/log/disk_usage log file.
The /usr/bin/testdome_candidates binary is executed at 6:00am every day.