This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'Which is not true of carcinoma tongue? \nSelect and explain. \nA. Lateral border is involved, B. Cervical lymph node involvement, C. Commonly adenocarcinoma, D. Tobacco chewing is a risk factor', 'role': 'user'}, {'content': 'Answer: C \nExplanation: SCC is the commonest malignancy', 'role': 'assistant'}]