[单选题]
What principle is responsible for alternqv3o7 t;d;esx3i d;c b4tsi-whjm e+-ating light and dark bands sfwe;5hv+w1u(nfs2b d+ j / sgwhen light pas; hgf+dsnvwws 5j2 /+su(eb f1ses through two or more narrow slits?
A. refraction
B. polarization
C. dispersion
D. interference
