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': 'The best guide to adequate tissue perfusion in the fluid management of a patient with burns, is to ensure a minimum hourly urine output of - \nSelect and explain. \nA. 10-30 ml, B. 30-50 ml, C. 50-70 ml, D. 70-100 ml', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 0.5 - 1 ml/kg/hr i.e. 30-60 ml/hr in a 60 kg man. Urine output is the key indicator for monitoring resuscitation.', 'role': 'assistant'}]