This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': 'Non-reducing disaccharide is \nSelect and explain. \nA. Sucrose, B. Fructose, C. Trehalose, D. Lactose', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Repeated question', 'role': 'assistant'}]