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 small intestinal obstruction in adults is \nSelect and explain. \nA. Malignancy, B. Crohn's disease, C. Hernia, D. Adhesions", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Adhesions account for more than 50% of small intestine obstruction. They follow appendicitis or other pelvic operations.', 'role': 'assistant'}]