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: Pathology
[{'content': 'A 3 cm squamous cell carcinoma of the retrornolar trigone and invading the mandible and the medial pterygoid muscle is at what TNM stage: \nSelect and explain. \nA. Stage I, B. Stage II, C. Stage III, D. Stage IV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]