You have four Cisco WLCs and have deployed wired guest access, using a single guest VLAN for all controllers. How can you achieve redundancy if the guest VLAN fails on the infrastructure switches? 

Answer options:

A. Configure one Cisco WLC as the anchor controller for the wired guest VLAN.
B. Configure a different wired guest VLAN on each Cisco WLC.C. Configure all the Cisco WLCs in the same mobility group.
D. Set a fallback port on the wired guest interface.
E. You cannot achieve redundancy of the wired guest VLAN.

E