This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mental Health, Subject name: Social & Preventive Medicine
[{'content': 'All are cluster B disorders of personality except - \nSelect and explain. \nA. Antisocial, B. Narcissistic, C. Avoidant, D. Borderline', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Avoidant Personality disorderso ClustorA: Paranoid, Schizoid, Schizotypal.o Clustor B: Antisocial (Dissocial), Histrionic, Narcissistic, Borderlineo Clustor C: Anxious (avoidant). Dependent, obsessive - compulsive (anankastic).", 'role': 'assistant'}]