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: Biochemistry
[{'content': 'α-D-glucose and β-D-glucose are \nSelect and explain. \nA. Stereoisomers, B. Epimers, C. Anomers, D. Keto-aldo pairs', 'role': 'user'}, {'content': 'Answer: C \nExplanation: D-glucose has two anomers, alpha and beta varieties. These anomers are produced by the spatial configuration with reference to the first carbon atom in aldoses and second carbon atom in ketoses. Hence, these carbon atoms are known as anomeric carbon atoms.\nReference: Vasudevan 7th\xa0 ed, pg 72', 'role': 'assistant'}]