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: ENT
[{'content': 'Most common site for contact ulcer in larynx is \nSelect and explain. \nA. Arytenoids, B. Corniculate, C. Anterior 1/3 rd of vocal cord, D. Cricoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]