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': 'Xpert MTB/RIF test is used to detect \nSelect and explain. \nA. For assessing resistance to isoniazid, B. For assessing multi drug resistant TB, C. For assessing rifampicin resistance, D. Monitoring drug response in MDR TB', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]