Which advanced option within a WLAN must be enabled to trigger Central Web Authentication for Wireless users on AireOS controller? 

Answer options:

A. DHCP server
B. override Interface ACL
C. static IP tunneling
D. AAA override

D

Reference: https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/ b_cg74_CONSOLIDATED_chapter_010110111.html