Which of the Following Scenarios Best Illustrates the Use of the Size

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

A) From the back of a lecture hall, students in the front row appear smaller to you than students halfway between the front and the back.
B) While turning the pages of your book, you perceive the pages as moving rectangles.
C) While walking down a street, you perceive that a specific building is far away if it does not appear to move quickly as you move.
D) While driving your car, you perceive that the position of nearby objects changes more than the position of distant objects.