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': '"Apple jelly nodules on diascopy are seen in" \nSelect and explain. \nA. Lichen schafuloceum, B. Lupus vulgaris, C. Psoriasis vulgorir, D. Scrofuloderma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is the most form of cutaneous TB characterized by chronic,progressive,itch,annulor skin lesions with cetrol scarring,dioscopy(pressing with glass slide) reveals "Apple jelly nodules"', 'role': 'assistant'}]