Sam is conducting an experiment in a closed room. He places two sound-generating instruments, A and B, in different places in the room. Both instruments generate sound waves of the same amplitude and at the same time. Sam is holding a recording device that records a louder sound from instrument A than from instrument B. What could have caused this mismatch in loudness? A. ) Instrument A is placed closer to Sam than instrument B. B. ) Instrument B is placed closer to Sam than instrument A. C. ) The sound wave generated by instrument A has a higher pitch. D. ) The sound wave generated by instrument B has a higher pitch. E. ) The sound wave generated by instrument B has a higher wavelength.

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