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
Which of the following surgery is contraindicated below 12 years of age? 
Select and explain. 
A. Rhinoplasty, B. Antral puncture, C. SMR, D. Septoplasty
C: SMR
Answer: C: SMR 
Explanation: Contraindications of SMR

Patients below 17 years of age. In such cases, a conservative surgery (septoplasty) should be done.
An acute episode of respiratory infection.
Bleeding diathesis.
Untreated diabetes or hypertension.