To Overcome Reception and Availability Problems, Mobile Telecom Services Firms

Short Answer

To overcome reception and availability problems, mobile telecom services firms have begun _____ that provide a "five bar" coverage in a roughly 5,000-square-foot footprint.
a. providing incentives to communities that allow the construction of towers
b. leveraging GEO and LEO technologies
c. offering femtocells
d. providing wi-fi base stations at very low costs
e. switching from Wi-Fi to WiMax