Which two methods would you use to change the runlevel on Linux machine?

Which two methods would you use to change the runlevel on Linux machine? (Choose two.)

A.
Specify the runlevel in the rc#.d directory.

B.
Specify the runlevel in the init command.

C.
Specify the runlevel in the chmod command.

D.
Specify the runlevel as an argument for the inittab file.

E.
Specify the runlevel at startup by using the boot loader program.