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': "Structures presented in MRM are all following except \nSelect and explain. \nA. Axillary vessels, B. Bell's nerve, C. Cephalic vein, D. Nipple", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]