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': 'A 35 years old male came with a progressive plaque over buttock for the last 2 years.The plaque is annular in shape with scarring in centre. Most likely diagnosis is: \nSelect and explain. \nA. Tinea corporis, B. Lupus vulgaris, C. Borderline leprosy, D. Kala azar', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Annular plaque, progressive in nature with typical central scarring suggest of lupus vulgaris.\nCentral clearing : Tinea corporis\nCentral crusting : Kala azar', 'role': 'assistant'}]