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: Skin
[{'content': 'The following test is not used for diagnosis of leprosy : \nSelect and explain. \nA. Lepromin test, B. Slit skin smear, C. Fine needle aspiration cytology, D. Skin biopsy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Lepromin test', 'role': 'assistant'}]