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 joint cavity can be examined in detail with out much surgical exposure by \nSelect and explain. \nA. Sialography, B. Arthroscopy, C. Biopsy, D. Endoscopy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]