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': 'Most common cause of acute intestinal obstruction in children is \nSelect and explain. \nA. Volvulus, B. Inguinal hernia, C. Intussusception, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]