Which of the following commands will accomplish this task?

A user wants to configure the application “myapp” to start on runlevels 2, 3, 4, and 5 every time the system starts.

Which of the following commands will accomplish this task?
A . chkconfig –level 2345 myapp on
B . systemctl myapp on 2345
C . chkcinfig myapp –levels 2-5
D . systemctl –levels 2345 on

Answer: A