This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Neck), Subject name: Surgery
[{'content': 'In which of the following head and neck cancers, is lymph node metastasis least common: \nSelect and explain. \nA. Tongue, B. Buccal mucosa, C. Hard palate, D. Lower alveolus', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e. Hard palate Incidence of cervical metastasis in head and neck cancers (in decreasing order)Tongue (most common)Floor of mouthLower alveolusBuccal mucosaUpper alveolusHard palate", 'role': 'assistant'}]