In the Moving Room Apparatus, Walls and Ceiling Can Be

In the moving room apparatus, walls and ceiling can be moved to create the impression of optic flow. Dr Jones observes two infants in the moving room. The first has been crawling for one month already and leaned forward and nearly fell in response to the optic flow cues of the moving room. The second infant is not crawling yet and remained in a stable sitting position while in the moving room. From these observations, Dr Jones may conclude that:

A) Locomotor experiences have no affect on infant's perception.
B) Locomotor experiences influence sensitivity to optic flow.
C) Perceptual systems are tuned by newly emerging motor skills.
D) Both b and c are true.