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: Pediatrics
[{'content': 'Ebstein anomaly - causes \nSelect and explain. \nA. Left atrial enlargement, B. Right atrial enlargement, C. Left ventricular enlargement, D. Right venticular enlargement', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ebstein anomaly is association with Right atrial enlargement. Ghai essential of pediatrics, eighth edition, p.no:423', 'role': 'assistant'}]