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: Pediatrics
Tetralogy of fallot is characterized by following except- 
Select and explain. 
A. AS, B. VSD, C. Over-riding of aoa, D. Infundibular constriction
A: AS
Answer: A: AS 
Explanation: Ans. is 'a' i.e., AS