What does the activation-key command in the Cisco ASA do?

A.
activates the SSM module in the Cisco ASA, providing intrusion protection and content filtering

B.
applies the activation key to the Cisco ASDM so the Cisco ASA can be managed using a web
interface

C.
automatically activates the Cisco ASA, allowing it to be configured right out of the box

D.
applies the activation key to the Cisco ASA operating system, so that the Cisco ASA is licensed
and all features are available