This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
All of the following statements are true regarding TOF, except: 
Select and explain. 
A. Right ventricular hypertrophy, B. Atrial septal defect, C. Overriding of aorta, D. Subpulmonic stenosis
B: Atrial septal defect
Answer: B: Atrial septal defect 
Explanation: b. Atrial septal defect(Ref: Nelson's 20/e p 2211-2217)Components of Tetralogy of fallot include ventricular septal defect, infundibular pulmonic stenosis, right ventricular hypertrophy & overriding of aorta.