A junior Linux administrator is installing patches using YUM. The administrator issues the following command: yum list installed The output of the command is as follows: 

Given this scenario and the output, which of the following should the administrator do to address this issue? 

Answer options:

A. renice "n 9 "p 5180
B. killall yum
C. ps "ef | grep yum
D. top | grep yum

C

Reference: https://www.thegeekdiary.com/yum-command-fails-with-another-app-is-currently-holding-the-yum-lock-in-centos-rhel-7/