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: Radiology
[{'content': 'On X-ray of the abdomen, soap bubble appearance is seen in: \nSelect and explain. \nA. Multiple cystic kidney, B. Meconium ileus, C. Cystic lymphangiectasis, D. Volvulus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Meconium ileus', 'role': 'assistant'}]