What is the advantage in encrypting the communication between the agent and the monitor in an Intrusion Detection System?

A.
Encryption of agent communications will conceal the presence of the agents

B.
The monitor will know if counterfeit messages are being generated because they will not be encrypted

C.
Alerts are sent to the monitor when a potential intrusion is detected

D.
An intruder could intercept and delete data or alerts and the intrusion can go undetected