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
Alpha Lynch Howarth surgery is for - 
Select and explain. 
A. Nasal septal perforation, B. Sinonasal tumors, C. Acoustic neuroma, D. Otosclerosis
B: Sinonasal tumors
Answer: B: Sinonasal tumors 
Explanation: None