What Is the Main Difference Between a Behavioral Model and a Procedurally

What is the main difference between a behavioral model and a procedurally rational model.

A) Behavioral models are not based on any particular assumptions, whereas procedurally rational models are.
B) Procedurally rational models do not depart from the rational model, whereas behavioral models do.
C) Behavioral models tell us why individuals make certain choices, whereas procedurally rational models do not.
D) There are no differences.