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
Term catatonia was used by - 
Select and explain. 
A. Karl kahlbaum, B. Adolf meyer, C. Leo kanner, D. Karen homey
A: Karl kahlbaum
Answer: A: Karl kahlbaum 
Explanation: Karl kahlbaum coined the terms catatonia and cyclothymia.