This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hereditary Hyperbilirubinemia & Jaundice, Subject name: Medicine
[{'content': 'Most common cause of obstructive jaundice in children? \nSelect and explain. \nA. Biliary atresia, B. Criggler najjar syndrome, C. Byler disease, D. Caroli cyst', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Biliary atresia: Biliary atresia is characterized by obliteration or discontinuity of the extrahepatic biliary system. The disorder represents the most common surgically treatable cause of cholestasis seen during the newborn period', 'role': 'assistant'}]