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: Medicine
[{'content': 'Celiac sprue causes malabsorption syndrome due to- \nSelect and explain. \nA. Coliform infection of small bowel, B. Lactase deficiency, C. Hypersensitivity to dietary gluten, D. Ischaemia of celiac artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]