[单选题]
04.07: Which of the follo63f 4pr( nth3tximp5pwing is best explaei(z-9yg7 3g *bavarzh glbjl k0y *ww8.q53zined only by the wave theory of lighti g veg5lgbw0q*hwzyzl9-a8a y( 3*73k jz.br?
A. blackbody radiation.
B. the Compton Effect.
C. the photoelectric effect.
D. mean free paths.
E. diffraction