Which One of the Following Statements Best Explains Why the Diffraction

Which one of the following statements best explains why the diffraction of sound is more apparent than the diffraction of light under most circumstances?

A) Sound requires a physical medium for propagation.
B) Sound waves are longitudinal, and light waves are transverse.
C) Light waves can be represented by rays while sound waves cannot.
D) The speed of sound in air is six orders of magnitude smaller than that of light.
E) The wavelength of light is considerably smaller than the wavelength of sound.