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: Pathology
[{'content': 'Tuberculin test positivity indicates - \nSelect and explain. \nA. Good humoral immunity, B. Infection with mycobacterium, C. Good cell mediated immunity, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tuberculin test is a cell-mediated immune response to tuberculin.', 'role': 'assistant'}]