What are the components of the Cisco Unified Wireless Network ?

What are the components of the Cisco Unified Wireless Network ?

A.
access points, wireless LAN controllers, Cisco Wireless Control System

B.
Air Quality Index charts, wireless LAN controllers, Cisco Wireless Control System

C.
access points, wireless LAN controllers, Cisco IronPort S-series Wen Security Appliance

D.
access points, WAAS Express, Cisco Wireless Control System