How should they edit a built-in log source?

You find that a customer has logs outside of the default destination defined by the built-in log source definition.
How should they edit a built-in log source?

A.
Delete the built-in log source and deploy a new agent.

B.
Highlight the built-in log source and use Create Like to edit.

C.
Use the Edit option under configuration menu.

D.
A user cannot edit built-in log sources.