Which three Statements describe the capabilities and functions of the chkconfig command in Oracle Linux?
A. It can be used to change the state of a service.
B. It can be used to specify the run levels for which a service is to be activated.
C. It can be used to list all services and their run levels-
D. It can be used to check the status of a service to see if it is running.
E. It can be used to add a service.