This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cognitive development and defence mechanism, Subject name: Psychiatry
[{'content': "Term 'Catatonia' was used by \nSelect and explain. \nA. Karl kahlbaum, B. Adolf Meyer, C. Leo Kanner, D. Karen Horney", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Contributor: Kahlbaum, Karl (1828-1899) Coined the Term: Catatonia, Symptom complex, Cyclothymia Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no.244', 'role': 'assistant'}]