This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
All of the following surgical procedures are used for allergic rhinitis except: 
Select and explain. 
A. Radiofrequency ablation of the inferior turbinate, B. Laser ablation of the inferior turbinate, C. Submucosal placement of silastic in inferior turbinate, D. Inferior turbinectomy
C: Submucosal placement of silastic in inferior turbinate
Answer: C: Submucosal placement of silastic in inferior turbinate 
Explanation: Allergic rhinitis causes hypertrophy of turbinates and nasal obstruction. Procedures (a), (b) and (d) reduce the size of inferior turbinate, providing better patency. Submucosal placement of silastic in inferior turbinate will further impair the nasal patency.