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': 'A characteristic feature of schizoid personality is - \nSelect and explain. \nA. Conversion reaction, B. Not concerned with disease, C. Checks details of all things, D. Emotional coldness', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Schizoid personality disorder is characterized by emotional coldness, marked detachment from other and little/no desire for close relationship. Patient invariable prefers solitary activity.', 'role': 'assistant'}]