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: Medicine
A child has cyanotic disease with left ventricular enlargement wiht left axis detion. Probable diagnosis Is - 
Select and explain. 
A. TOF, B. VSD, C. Double outlet right ventricle, D. Tricuspid atresia
D: Tricuspid atresia
Answer: D: Tricuspid atresia 
Explanation: Tricuspid atresia The clinical picture is usually dominated by severe cyanosis due to obligatory admixture of systemic and pulmonary venous blood in the left ventricle. The ECG characteristically shows RA enlargement, left-axis detion, and LV hyperophy ( Harrison&;s principle of internal medicine,18th edition,pg no. 1927 )