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: Surgery
[{'content': 'Class III hemorrhage is defined as blood loss up to? \nSelect and explain. \nA. 500-750 ml, B. 750-1500 ml, C. 1500-2000 ml, D. > 2000 ml', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]