This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'A 68-year-old man presents with crampy abdominal pain and distention with vomiting. Findings on physical examination are positive for healed abdominal scars. X-rays reveal multiple gas fluid levels. The WBC count is 12,000. What is the most likely diagnosis? \nSelect and explain. \nA. Small-bowel intestinal obstruction due to adhesions, B. Hernia, C. Appendicitis, D. Inflammatory bowel disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The presence of distended loops of bowel indicate bowel obstruction. The clinical features favor mechanical obstruction rather than paralytic ileus due to infection. Obstruction due to adhesions is more common than obstruction due to hernia.', 'role': 'assistant'}]