Two solenoids stand side-by-side. Solenoid B differs from solenoid A in three respects. Its total current is 2 times as great, it has 4 times as many coils, and it is 3 times as long. How do the magnetic fields inside the two solenoids compare? A.. A standing wave is generated.. B.. Beats are produced.. C.. A traveling wave is generated.. D.. Resonance occurs.. E.. The frequency of the resultant wave decreases.