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': 'TB multidrug regimen is given to \nSelect and explain. \nA. Prevent side effects, B. Broad spectrum, C. Prevent resistance, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]