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 favour of - \nSelect and explain. \nA. Internal herniation, B. Stricture, C. Strangulated hernia, D. Intussusception', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]