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 of the following cardiac defect is a component of Pentalogy Of Fallot? 
Select and explain. 
A. Atrial Septal Defect (ASD), B. Patent Ductus Aeriosus (PDA), C. Coarctation of Aoa (COA), D. Left Venticular Hyperophy (LVH)
A: Atrial Septal Defect (ASD)
Answer: A: Atrial Septal Defect (ASD) 
Explanation: Pentalogy of Fallot is a rare anomaly with all structural abnormalities seen in Tetralogy of Fallot and an ostium secundum ASD. Ref: Echocardiography in Adult Congenital Hea Disease, Wei Li, Michael Henein, Michael A. Gatzoulis - 2008 - Page 174; An Introduction to Electro Cardiography, By Leoschamroth - 7th Edition, Page 267.