What are the main steps for listening for notifications from WebLogic Server MBeans?

What are the main steps for listening for notifications from WebLogic Server MBeans?

A.
Create a listener class. Create a class that registers your listener. Package/Deploy these
classes.

B.
Create a listener class. Deploy this to the Admin Server.

C.
Create a registration class. Create a notification filter. Deploy theses classes.

D.
Create a registration class. Add the class to the classpath. Restart the server.