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 cluster A personality disorders except: \nSelect and explain. \nA. Schizoid personality disorder, B. Schizotypal personality disorder, C. Paranoid personality disorder, D. Avoidant personality disorder', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Avoidant personality disorder is a cluster C personality disorder.', 'role': 'assistant'}]