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
[{'content': "Echolalia is a recognised feature of : \nSelect and explain. \nA. Catatonic schizophrenia, B. Anorexia nervosa, C. Alzheimer's disease, D. All", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. Catatonic schizophrenia', 'role': 'assistant'}]