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': 'True about lupus vulgaris – a) Apple jelly nodule at root of noseb) TB of skin & mucosac) Also known as scrofulodermad) ATT is helpful \nSelect and explain. \nA. abd, B. bcd, C. abc, D. ab', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lupus vulgaris is the most common form of cutaneous (skin and mucosa) tuberculosis.\nBlanching with glass slide reveals grey green foci → Apple jelly nodules.\nTreatment is anti-tubercular drugs.', 'role': 'assistant'}]