A corporation has a Cisco 5520 WLC running software 8.x. configured with US country code. They have recently purchased 20 AIR-AP3702I-UXK9 APs to replace older APs in one of their branch offices. After those are deployed, users report that they can no longer access SSIDs that are operating on the 5 GHz band.
Which cause of this problem is true?
A . The 5 GHz radio operates in scanner mode until the APs are primed.
B . The network administrator mist disable the 5 GHz radio interfaces and re-enable them on every UX AP to make the 5 GHz radios operational on all UX APs.
C . The 5 GHz radio operates in rogue detection mode and cannot be changed to any other station role until the APs are primed.
D . The 5 GHz radio is in down state until the APs are primed.
Answer: A