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: Unknown
[{'content': 'Most common nerve involvement in fracture surgical neck humerus : \nSelect and explain. \nA. Axillary nerve, B. Radial nerve, C. Ulnar nerve, D. Median nerve', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Axillary nerve Most common nerve involved in :Anterior dislocation of shoulder-Axillary nerve* Surgical neck of humerus-Axillary nerve* Shaft of humerus-Radial nerve* Supracondylar humerus-Median nerve Volkman's ischemic contracture-Median nerve*Dislocation of lunate-Median nerve *", 'role': 'assistant'}]