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': 'Lynch Howah surgery is for: \nSelect and explain. \nA. Nasal septal perforation, B. Sinonasal tumours, C. Acoustic neuroma, D. Otosclerosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Frontal osteomas can be excised by Lynch Howah surgery', 'role': 'assistant'}]