A wireless engineer is unable to join lightweight access points to the Cisco Wireless Controller. The access points receive ip addresses from a DHCP pool configured on the core switch. Which action must be taken to resolve the issue?
A. Upgrade the Wireless Controller to a newer IOS release.
B. Configure option 43 on the DHCP pool.
C. Configure option 82 on the Wireless controller.
D. Change the management ip address on the Wireless Controller.
