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': 'A 41-year-old patient presented with chronic diarrhoea for 3 months. A d-xylose absorption test was ordered to look for - \nSelect and explain. \nA. Carbohydrate malabsorption due to mucosal disease, B. Carbohydrate malabsorption due to chronic pancreatitis, C. Fat malabsorption dure to mucosal disease, D. Fat malabsorption due to chronic pancreatitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]