This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychoanalysis, Subject name: Psychiatry
Who worked on dreams and wrote a book "interpretation of Dreams" 
Select and explain. 
A. Sigmund Freud, B. Eric Ericson, C. Carl Jung, D. Adolf Meyer
A: Sigmund Freud
Answer: A: Sigmund Freud 
Explanation: Sigmund Freud wrote the book 'The Interpretation of Dreams' which was published in 1900.