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': "Clergyman's knee involves ? \nSelect and explain. \nA. Olecranon bursa, B. Suprapatellar bursa, C. Infrapatellar bursa, D. Prepatellar bursa", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., lnfrapatellar bursa", 'role': 'assistant'}]