Which of the following statement best expresses the differences between psychologist and a psychiatrist?
Statement I: A psychologist possesses the knowledge of psychology and holds recognized degree in the field. Whereas a Psychiatrist are qualified medical practitioners who are concerned with psychological well-being of individuals.
Statement II: Both psychiatrists and psychologists understand how the brain works, our emotions, feelings, and thoughts.
Statement III: Psychiatrists are known as medical doctors, whereas psychologists are not.
Correct answer is option 'C'. Can you explain this answer?