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
Which one of the following is a cyanotic congenital heart disease ? 
Select and explain. 
A. Patent ductus arteriosus, B. Atrial septal defect, C. Ventricular septal defect, D. Tetralogy of Fallot
D: Tetralogy of Fallot
Answer: D: Tetralogy of Fallot 
Explanation: None