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': "A patient presents with history of mild diarrhea, blood in stools with multiple fistulas. What is the most probable diagnosis: September 2007 \nSelect and explain. \nA. Intestinal tuberculosis, B. Ulcerative colitis, C. Crohn's disease, D. Typhoid", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C: Crohn's disease", 'role': 'assistant'}]