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': 'Most common nerve involved in the fracture of surgical neck of humerus is: \nSelect and explain. \nA. Median, B. Radial, C. Ulnar, D. Axillary', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In fracture surgical neck of humerus the axillary nerve (circumflex nerve) is most frequently damaged. Ref: Essential Ohopedics By J Maheswari, 2nd Edition, Page 775', 'role': 'assistant'}]