What Does the Introductory Chapter Conclude About the Influence of Cognitive

What does the introductory chapter conclude about the influence of cognitive approaches on other areas of psychology?

A) Cognitive psychology has had very little influence on areas outside traditional experimental psychology.
B) Cognitive psychology has influenced experiments in some research-oriented areas of psychology, but it has not yet had an impact on applied areas.
C) Cognitive psychology has influenced disciplines that are concerned with the behavior of humans as individuals, but it has not yet influenced the areas of psychology concerned with social interactions.
D) Cognitive psychology has had an important impact on a variety of areas throughout psychology.