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': 'A 16 year old student repoed for the evaluation of multiple hypopigmented macules on the trunk and limbs. All of the following tests are useful in making a diagnosis of leprosy, except: \nSelect and explain. \nA. Sensation testing, B. Lepromin test, C. Slit smears, D. Skin biopsy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Lepromin test Lepromin test has no diagnostic value; it has only prognostic significanceQ as it tells about cell mediated immunity & classify the type of disease. Lepromin test is most positive in TT because cell mediated immunity is least suppressedQ', 'role': 'assistant'}]