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: Dental
[{'content': "Milian's ear sign is positive in: \nSelect and explain. \nA. Cellulitis, B. Erysipelas, C. Impetigo contagiosa, D. Borderline Tuberculoid Leprosy", 'role': 'user'}, {'content': "Answer: B \nExplanation: Erysipelas is infection of dermal lymphatics by Group A Beta-hemolytic streptococi,characterized by erythema,tenderness and lesions have raised margins.\nMilians's ear sign : positive, that is involvement of ear is seen in erysipelas.", 'role': 'assistant'}]