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': 'C Xylose test diagnostic of \nSelect and explain. \nA. Coeliac disease, B. Lactose intolerance, C. Bacterial over growth, D. Whipples disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Coeliac disease', 'role': 'assistant'}]