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': 'Blood loss in class III hemorrhagic shock \nSelect and explain. \nA. < 750 mL, B. 750 - 1500 mL, C. 1500 - 2000 mL, D. > 2000 mL', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Class I - < 750 mL\nClass II - 750 - 1500mL\nClass III - 1500 - 2000mL\nClass IV - 2000mL.', 'role': 'assistant'}]