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: Surgery
[{'content': 'Recurrent pain abdomen with intestinal obstruction and mass passes per rectum goes in our of ? \nSelect and explain. \nA. Internal herniation, B. Stricture, C. Strangulated hernia, D. Intussusception', 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is 'd' i.e. Intussception", 'role': 'assistant'}]