New 5G cellular transmitters operate at a carrier frequency of 28GHz. Approximately what is the wavelength of this radiation, and in which region of the electromagnetic spectrum does it fall?
(a) 0.11m — Long-wavelength radio
(b) 0.011m — Microwaves
(c) 1.1×10−3m — Infrared
(d) 0.093m — Microwaves