When configuring the WLC for single sign-on for the NAC, which device is used for the RADIUS accounting IP address?

When configuring the WLC for single sign-on for the NAC, which device is used for the RADIUS accounting IP address?

A.
Cisco NAC Appliance Manager

B.
Cisco NAC Appliance Server

C.
Cisco NAC Guest Server

D.
Cisco ACS

E.
Cisco WCS

Explanation: