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: Radiology
[{'content': 'Ileocecal tuberculosis presents with all except – \nSelect and explain. \nA. Rapid emptying of narrowed terminal ileum, B. Inverted umbrella sign, C. Stellate ulcer with elevated margins, D. Longitudinal ulcers are more common', 'role': 'user'}, {'content': "Answer: D \nExplanation: Characteristically ulcers tend to be descrete and transverse or star shaped (stellate) with elevated margin, in contrast to Crohn's disease in which ulcers are longitudinal.", 'role': 'assistant'}]