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: A. i.e. Karl Kahlbaum