This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Pathology
[{'content': 'Extraintestinal manifestations of Crohn disease include ALL EXCEPT \nSelect and explain. \nA. Uveitis, B. Migratory polyarthritis, C. Sacroiliitis, D. Pericholangitis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) Severe bacterial infection(Ref Gut liver 2010, 4 (3): 338-344)Uveitis and polyarthritis are common extra intestinal manifestation of crohn's disease.Sacroiliitis is more common in crohn's disease (21%) as compared to U.C (12.2%) especially in patients with upper CaI or personal involvement.Pre cholangitis is common extra intestinal manifestation of U.C.", 'role': 'assistant'}]