Identify the Letter of the Choice That Best Matches the Phrase

Identify the letter of the choice that best matches the phrase or definition.
-Transmission media that sends communications signals through the air or space using radio, microwave, and infrared signals.

A) broadcast radio
B) cellular radio
C) 2G
D) 3G
E) 4G
F) physical
G) wireless
H) coaxial
I) infrared
J) twisted-pair
K) Bluetooth
L) UWB
M) WiMAX
N) P2P
O) NFC
P) fiber-optic
Q) latency
R) firewalls
S) RFID
T) dedicated