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
The following features are true for tetralogy of Fallot, except – 
Select and explain. 
A. Ventricular septal defect, B. Right ventricular hypertrophy, C. Atrial septal defect, D. Pulmonary stenosis
C: Atrial septal defect
Answer: C: Atrial septal defect 
Explanation: Tetralogy of Fallot

The classical example of cyanotic patients with pulmonic stenosis is tetralogy of fallot.
TOF is the commonest congenital heart disease.
Constituents of TOF
Ventricular septal defect                       
Pulmonic stenosis          
Overriding or dextroposed aorta    
Right ventricular hypertrophy.