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 56-year-old man has suffered from intermittent claudication for 5 years. He has recently developed cramping abdominal pain that is made worse by eating. He has a history of a 15-lb weight loss. What is the most likely diagnosis? \nSelect and explain. \nA. Chronic intestinal ischemia (intestinal angina), B. Chronic cholecystitis, C. Esophageal diverticulum, D. Peptic ulcer', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Patients with underlying ischemic disease may develop acute intestinal infarction or intestinal angina, which is aggravated by eating.', 'role': 'assistant'}]