which Cisco NAC Appliance component provides the Client-Machie IP Address to MAC address mapping?

In a Layer 3 out-of-band deployment, which Cisco NAC Appliance component provides the Client-Machie IP Address to MAC address mapping?

A.
Cisco NAS

B.
Cisco Trust Agent

C.
Cisco NAM

D.
Cisco Security Agent

E.
Cisco NAA