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
A child with central cyanosis and enlarged left ventricle the probable diagnosis is - 
Select and explain. 
A. Tricuspid atresia, B. Eisenmengher's syndrome, C. Tetralogy of fallots, D. Anomolous pulmonary aery
A: Tricuspid atresia
Answer: A: Tricuspid atresia 
Explanation: Ans. is 'a' i.e., Tricuspid atresia o All the given options are cyanotic hea diseases. o But, amongst the given options, only tricuspid atresia causes left ventricular hyperophy.