This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity, Subject name: Surgery
[{'content': 'Carcinoma tongue is most common at - \nSelect and explain. \nA. Lateral border, B. Dorsum, C. Posterior 1/3rd, D. Tip of tongue', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Lateral border o MC site is middle of lateral border or the ventral aspect.", 'role': 'assistant'}]