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: Medicine
[{'content': 'The following is used for testing absorption in intestine - \nSelect and explain. \nA. Xylose, B. Sucrose, C. Fructose, D. Maltose', 'role': 'user'}, {'content': 'Answer: A \nExplanation: D-xylose absorption test is used to check how well your intestines are absorbing a simple sugar called D-xylose. From the results of the test, your doctor can infer how well your body is absorbing nutrients. D-xylose is a simple sugar that occurs naturally in many plant foods. Ref Davidson edition23rd pg 822', 'role': 'assistant'}]