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': 'All of the following are true about paranoid schizophrenia except - \nSelect and explain. \nA. Most common type of schizophrenia, B. Onset in 3rd / 4th decade, C. Delusions of grandeur, D. Rapid deterioration of personality', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Paranoid schizophrenia is the commonest type of schizophrenia in clinical practice. The onset is later (3rd - 4th decade). The core symptoms are delusions of persecution. Other types of delusions (grandeur, reference, control, infidelity, double) and hallucinations may also occur. There is minimal or no disturbance of affect, volition, speech, motor behavior, and personality.', 'role': 'assistant'}]