What Do the Preface to Wundt's Principles of Physiological Psychology

Multiple Choice

What do the preface to Wundt's Principles of Physiological Psychology and the original constitution of the American Psychological Association have in common?

A) they both defined psychology as the study of behavior
B) they both recognized that psychology was a subdivision of philosophy
C) they both emphasized the scientific nature of the new psychology
D) they both defined psychology as the study of the mind