This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal Radiology, Subject name: Radiology
[{'content': "Goose neck deformity is seen in \nSelect and explain. \nA. CHPS, B. Ischemic colitis, C. Ileocecal TB, D. Crohn's disease", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ileocecal TB: Goose neck deformity occurs due to contracted, cicatrized, and pulled-up cecum as well as straightening of the terminal ileum.', 'role': 'assistant'}]