Which of the Following Scenarios Best Illustrates the Size Cue

Multiple Choice

Which of the following scenarios best illustrates the size cue for monocular depth perception?

A) While walking down a street, you can tell that something is close if it doesn't move as quickly as you move.
B) While turning the pages of your book, you perceive the pages as moving rectangles.
C) While walking on the beach, you perceive that your friend is far away because he looks very small.
D) While riding on the train, the world seems to race past you as if it were moving and you were stationary.