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': 'The following statement stands true for Mantoux test - \nSelect and explain. \nA. Test is read before 48 hrs, B. 6-9 mm induration shows maximum chances of developing TB, C. A positive test does not indicate that the person is suffering from disease, D. New cases are more likely to occur in tuberculin negative person than those who already are tuberculin reactors', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]