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 is not included in RNTCP \nSelect and explain. \nA. X-ray is diagnostic, B. Directly observed, C. Active case finding, D. Drugs given daily', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]