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: Social & Preventive Medicine
[{'content': 'Which of the following statements about lepromin test is not true ? \nSelect and explain. \nA. It is negative in most children in first 6 months of life, B. It is a diagnostic test, C. It is an impoant aid to classify type of leprosy disease, D. BCG vaccination may conve lepra reaction from negative to positive', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., It is a diagnostic test", 'role': 'assistant'}]