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
[{'content': 'Essential criteria for TOF includes all, EXCEPT: \nSelect and explain. \nA. Valvular stenosis, B. Infundibular stenosis, C. Over riding of aoa, D. RVH', 'role': 'user'}, {'content': "Answer: A \nExplanation: ToF is the most common cyanotic congenital hea malformation and one of the first complex lesions to be successfully repaired. ToF occurs in 7% to 10% of children with CHD. The four characteristic findings in ToF are (1) a malaligned VSD, (2) RV outflow or pulmonary valve or aery stenosis or atresia, (3) a dextroposed overriding aoa, and (4) RV hyperophy. Valvular stenosis is not a essential criteria for TOF. Ref: Aboulhosn J.A., Child J.S. (2011). Chapter 84. Congenital Hea Disease in Adults. In V. Fuster, R.A. Walsh, R.A. Harrington (Eds), Hurst's The Hea, 13e.", 'role': 'assistant'}]