Two people are singing a note at exactly 300 Hz. A microphone is placed in front of them to record their voices but when the track is played back, the recorded note is much quieter than the singers were producing. What is the best explanation for this result? A.
The microphone could not pick up the same frequency coming from two different sources.

B.
The sound waves went through destructive interference and cancelled each other out.

C.
The microphone was unable to pick up the sound because of the large amplitude.

D.
The sound waves went through constructive interference and cancelled each other out.