The First Evidence for Electromagnetic Waves Came from

The first evidence for electromagnetic waves came from

A) Heinrich Hertz's experiments in which electric charge was placed on small wooden rod and set into rapid vibration; EM waves were detected by a second wooden rod at some distance from the first rod.
B) Heinrich Hertz's experiments in which electrons jumped back and forth across a gap in an electric circuit and EM waves were detected at some distance from the gap.
C) Maxwell's experiments in which magnetic effects were demonstrated to result from the current in electrical circuits.
D) Marconi's experiment in which sound waves were sent from a vibrating membrane in one city and received by a similar device in another city.
E) Marconi's experiment in which radio waves were sent from a piece of vibrating crystal in one city and received by a similar device in another city.