Which is a function of a Cisco router acting as a Network Access Device (NAD ) in a NAC Framework solution ?

Which is a function of a Cisco router acting as a Network Access Device (NAD ) in a NAC Framework solution ?

A.
Sends and receives posture information to and from the policy server using the RADIUS protocol

B.
Communicates with the antivirus policy server using the HCAP protocol

C.
Maps policy decisions to a network access profile

D.
Acts as a Posture Credentials Provider (PCP)