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: Pediatrics
[{'content': "'True regarding crohn's disease are A/E ? \nSelect and explain. \nA. Scleroderma, B. Transmural involvement, C. Cobble stone appearance, D. Skin involvement", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Scleroderma o The skin involvement in Crohn's disease causes erythema nodosum, scleroderma does not occur in Crohn's disease. o Other extra intestinal manifestations of Crohn's disease: 1. Migratory polyahritis 4. Sacroiliaitis 7. Ankylosing spondylitis 2. Uveitis 5. Hepatic pericholangitis 8. Primary sclerosing cholangitis", 'role': 'assistant'}]