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': 'Treatment of leukoplakia \nSelect and explain. \nA. Local excision, B. Repositioning of ill fitting dentures, C. Topical chemotherapy, D. Excision and radiotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: • In most cases, lesions regress spontaneously after stopping alcohol or tobacco consumption or correction of underlying cause.', 'role': 'assistant'}]