This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification of carbohydrate, Subject name: Biochemistry
[{'content': 'Reducing sugar in urine can be detected by \nSelect and explain. \nA. Benedicts test, B. Fehling solution, C. Glucose - oxidase test, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: All monosaccharides are reducing sugars (functional group is free) Tests include : Benedict's test, Fehling's test, Barfoed's test etc. The reduction is much more efficient in the alkaline medium than in the acid medium.", 'role': 'assistant'}]