Refer to the exhibit.

Access points are deployed in an office building and users report that the real-time communications quality of experience is poor when users walk between the elevators. The elevators are a heavy metallic obstacle, and AP 3 was installed to cover the elevator area, which AP 1 and AP 2 signal does not reach.
Communications are captured for a user walking from point A to point C, and it is observed that the user iPhone device suddenly scans all bands and then roams from AP 1 to AP 3 somewhere between points В and С. WLAN is set to 5 GHz only, Open, default rate configuration. Which action improves the real-time application quality of experience in this area?