Who Is This Person and for What Is He Famous

Who is this person and for what is he famous?

A) Swiss psychiatrist Carl Jung, who developed the idea of the "collective unconscious"
B) Swiss psychiatrist Hermann Rorschach, who created the famous inkblot test of personality
C) German psychologist Alfred Adler, who proposed the idea of the inferiority complex
D) American psychologist Carl Rogers, who developed the idea of the actualizing tendency