When a radio signal was received by the cornier the small metal pieces inside clean together and allow current to pass through the current with trigger a bell or a piano attached to a paper strip which would make a record of a signal why was the car here and important piece of technology? A. it led to the development of other devices that use the wave technology.

B. it allowed people to send images long distances.

C. it was the most advanced device that used wave technology ever produced.

D. it read directly to devices like computers