What kind of waves are produced by the alternating current in standard electric power lines?
A) 60 Hz electromagnetic waves.
B) 60 Hz electro-chemical waves.
C) 100 MHz [mega-hertz] electromagnetic waves, in the FM radio region of the spectrum.
D) Standard AC is simply a vibration of electrons that doesn't produce any kind of waves at all.
E) 100 MHz sound waves.
A
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Fill in the blank(s) with correct word