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: Medicine
[{'content': 'The recommended level of anti-coagulation for most patients is an INR of \nSelect and explain. \nA. 1.0-2.0, B. 2.5-3.5, C. 2.0-3.0, D. 3.0-4.56', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]