Miguel is skipping rocks across the surface of a lake. After he throws it, each stone goes through the following motions:

I. the stone moves toward the water
II. the stone hits the surface of the water and bounces off
III. gravity pulls the stone back toward the water
IV. the stone enters the water and slows down

In which part of the stone's movement is the stone most like a beam of light that is being refracted?

A. III
B. IV
C. I
D. II