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: Surgery
[{'content': 'A chronic smoker with history of hoarseness was found\non examination to have keratosis of the larynx. All of the\nfollowing are possible treatment modalities except: \nSelect and explain. \nA. Laser vaporizer, B. Stop smoking, C. Stripping of the vocal cord, D. Partial laryngectomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]