Which of the Following Is Not Inhibiting Faster Wi-Fi Expansion

Multiple Choice

Which of the following is not inhibiting faster Wi-Fi expansion?

A) Users cannot roam from hotspot to hotspot if the hotspots use different Wi-Fi network services.
B) A lack of security.
C) The growth of WiMAX
D) Unless the service is free, users have to log on to separate accounts for each hotspot.
E) Wi-Fi services may not survive in the face of free hotspot access.