Refer to the exhibits.
Exhibit A.

Exhibit B.

Exhibit C.

A wireless network has been installed in a small office building and is being used by a business to connect its wireless clients. The network is used for multiple purposes, including corporate access, guest access, and connecting point-of-sale and Io׀¢ devices.
Users connecting to the guest network located in the reception area are reporting slow performance. The network administrator is reviewing the information shown in the exhibits as part of the ongoing investigation of the problem. They show the profile used for the AP and the controller RF analysis output together with a screenshot of the GUI showing a summary of the AP and its neighboring APs.
To improve performance for the users connecting to the guest network in this area, which configuration change is most likely to improve performance?