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': "Gissane's angle in intraaicular fracture of calcaneum : \nSelect and explain. \nA. Reduced, B. Increased, C. Not changed, D. Variable", 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Increased', 'role': 'assistant'}]