A Demonstration of Visual Kinesthesis Is That

A demonstration of visual kinesthesis is that

A) People tilt back when a seen wall approaches, showing that the approaching wall signals falling forward
B) People tilt back when a seen wall approaches them, showing that the approaching wall signals falling backward
C) People tilt forward when a seen wall approaches them, showing that the approaching wall signals falling forward
D) People tilt forward when a seen wall approaches them, showing that the approaching wall signals falling backward