C
Explanation:
A good example of the range of an infrared is a television remote control or a garage door opener. Infrared networks are capable of high data rates, but they are limited in the distance between the infrared points, and also by the fact that a line of sight between the nodes is usually required.

Incorrect answers:
A, D. Although these are both wireless methods, the data rate capabilities are somewhat
limited, especially when compared to infrared links.
B, E. Although these are both capable of relatively high data rates, they do not use
wireless technology.   _{Your Comment}