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': 'Which type of Schizophrenia carries the worst prognosis? \nSelect and explain. \nA. Catatonic, B. Hebephrenic, C. Paranoid, D. Simple', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Simple Schizophrenia carries the worst prognosis.\nIt is characterized by presence of only negative symptoms & no positive symptoms. (Presence of negative symptoms always carry bad prognosis)', 'role': 'assistant'}]