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': "A female developed 'pointing index' after an accident. This is due to injury to the following nerve? \nSelect and explain. \nA. Median, B. Radial, C. Ulnar, D. Axillary", 'role': 'user'}, {'content': "Answer: A \nExplanation: In high median nerve lesions, the long flexors to the thumb and index fingers are also paralysed and the patient shows the 'pointing index' sign. High lesions are generally due to forearm fractures or elbow dislocation. Ref: Apley's System of Ohopaedics and Fractures By Louis Solomon, David Warwick, Selvadurai Nayagam, 2010, Page 284.", 'role': 'assistant'}]