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': "Duodenal villous atrophy is seen in \nSelect and explain. \nA. Crohn's disease, B. Ulcerative colitis, C. Celiac disease, D. Cystic fibrosis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Celiac disease(Ref: R9/ 1782)D Xylose absorption test is a medical test to diagnose condition that cause malabsorption of proximal small intestine.', 'role': 'assistant'}]