Refer to the exhibit.

A Cisco Wireless IP Phone is unable to seamlessly roam on 2.4 GHz. There are interruptions of
several seconds on each roaming. No problems are reported on 5 GHz. A full site survey for voice has
been completed on both bands.
Which Cisco WLC feature does this issue involve?

A.
client load balancing

B.
Aironet information element

C.
coverage-hole detection

D.
client band select