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': 'TNM staging of breast carcinoma with positive bilateral supraclavicular lymph nodes is? \nSelect and explain. \nA. N3a, B. N3b, C. N3c, D. M1', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer- D. M1', 'role': 'assistant'}]