[单选题]
The principle which )yo/0fhybthj,a* yx :x 8tah3explains why a prism /d,bgaax.b*oth 0mb *x5icxz m4z2b(vv(/co separates white light into different colorb (a2v bvb0xx hgm/xc mc 4/ta5*(z, zobo.id*s is
A. refraction.
B. polarization.
C. dispersion.
D. total internal reflection.
