What changes would you make to accomplish this task?

You want to manage a service into a specific runlevel in the Linux booting equence. What changes would you make to accomplish this task? (Choose all that apply.)

A.
Insert a script to manage the service in the /etc/rc.d/init.d directory.

B.
Add the entry for the service in the /etc/rc.d/init.d/rc.sysinit file.

C.
Execute the /sbin/runlevel command to specify the runlevel for the service.

D.
Create the appropriate symbolic links on the desired /etc/rc.d/rc<runlevel>.d directory to add a
service to he system.