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': "In Volkmann's ischaemia, surgery should be done within: \nSelect and explain. \nA. 24 hours, B. 36 hours, C. 1 hour, D. 6 hours", 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. 1 hour', 'role': 'assistant'}]