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 patient presents with cheek ca of 2.5 cm size close to and involving the alveolus with a single mobile cervical lymph node of 6 cm size. What is the TNM staging: \nSelect and explain. \nA. T3 N2, B. T3 N3, C. T4 N2, D. T4N3', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]