A junior Linux administrator needs to ensure a service will start on system boot. Which of the following commands should be used to accomplish this task? 

Answer options:

A. chkconfig <service> on
B. systemctl <service> bootup
C. service <service> enable
D. crontab install <service>

A

Reference: https://geekflare.com/how-to-auto-start-services-on-boot-in-linux/