What Is One of the Ultimate Conclusions to Be Drawn

What is one of the ultimate conclusions to be drawn from Nisbett and Wilson's research demonstrating people's reliance on a priori causal theories to explain their own behavior?

A) While people have access to the products of their thought processes, they have little access to those processes themselves.
B) Dispositional factors are more important than situational factors in determining how people behave.
C) Situational factors are more important than dispositional factors in determining the explanations people give for their own behavior.
D) People have exceptional powers of introspection.