After executing the atq command, the following jobs are displayed: 2 2014-11-22 22:00 a test_user 3 2014-11-22 20:00 a root 4 2014-11-22 22:45 a oracle_dba Which of the following commands will delete job 2?

2 2014-11-22 22:00 a test_user
3 2014-11-22 20:00 a root
4 2014-11-22 22:45 a oracle_dba

• atrm test_user
• atrm 2
• test_user should manually delete the entry
• at -r 2