This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Perioperative Fluids, Subject name: Anaesthesia
[{'content': 'What is maintenance fluid per hour requirement for 60 kg adult:- \nSelect and explain. \nA. 100 ml/ hour, B. 80 ml / hour, C. 120 ml/hour, D. 60 ml/hr', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Per hour requirement of maintainance fliuid - 4-2-1 For 1st 10 kg = 4ml/kg bw For 2nd 10 kg = 2ml/kg bw For rest body weight = 1 ml / kg bw', 'role': 'assistant'}]