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': 'Kiss ulcer of larynx is due to: March 2004 \nSelect and explain. \nA. Vocal abuse, B. Papilloma, C. Vocal nodule, D. Tuberculosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Vocal abuse', 'role': 'assistant'}]