Donald's living room is home to a wireless internet router, a television, an FM radio, and the family's cell phones. Donald knows all of those devices use the same type of waves to communicate, and that waves can cause interference with other waves. How do all of the devices still work while
in the same room?
A Each type of device uses waves of different amplitudes, so there is no interference
B Only the router receives its signals over the air, so there is no interference.
C Each type of device uses waves of different frequencies, so there is no interference.
D Only the television receives its signals over the air, so there is no interference.