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': 'Multiple strictures in intenstine are found in - \nSelect and explain. \nA. Radiation enteritis, B. Duodenal ulcer, C. Ulcerative colitis, D. Gastric erosion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]