This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
The term "Ambivalence" was coined by - 
Select and explain. 
A. Hippocrates, B. Eugen bleuler, C. Kraeplin, D. Sigmund freud
B: Eugen bleuler
Answer: B: Eugen bleuler 
Explanation: None