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
Ebstein anomaly - causes 
Select and explain. 
A. Left atrial enlargement, B. Right atrial enlargement, C. Left ventricular enlargement, D. Right venticular enlargement
B: Right atrial enlargement
Answer: B: Right atrial enlargement 
Explanation: Ebstein anomaly is association with Right atrial enlargement. Ghai essential of pediatrics, eighth edition, p.no:423