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': 'Athletic sustained an injury around the knee joint suspecting cailage damage, which of the following is an investigation of choice? \nSelect and explain. \nA. Pain X ray, B. Clinical examination, C. Ahroscopy, D. Ahrotomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Ahroscopy Ahroscopy followed by MRI is investigation of choice for ligamentous injury of kneeQ.', 'role': 'assistant'}]