In Problem 26, you were told to assume the speakers could be treated as point sources. Which of the following statements justifies this assumption?
(a) Small speakers could be much smaller than the wavelength of the sound waves.
(b) The speakers could be larger than the wavelength but smaller than the size of the room.
(c) The wavelength is smaller than the size of the room.
(d) The wavelength is smaller than the spacing between the speakers.