This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
[{'content': 'TB multidrug regimen is given to- \nSelect and explain. \nA. Prevent resistance, B. Broad spectrum, C. Prevent side effects, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Prevent resistance o Multidrug treatment in TB is given to -i) Prevent emergence of persistersii) Prevent relapseiii) Prevent emergence of resistanceiv) shorten the duration of treatment", 'role': 'assistant'}]