Which Pair is Anomeric

Question

Which pair is anomeric?
A) D-glucose and D-fructose
B) D-glucose and L-fructose
C) D-glucose and L-glucose
D) $\alpha$-D-glucose and$\beta$-D-glucose
E) $\alpha$-D-glucose and $\beta$-L-glucose

Accepted Answer

F1F1F1S1F1F1F10-D-glucose and F1F1F1S1F1F1F10-D-glucose are anomeric pairs because they differ only in the orientation of their hydroxyl (-OH) groups at the anomeric carbon (C1) position. The other options either involve different sugars or sugars with the same orientation at their anomeric carbon position, making them non-anomeric pairs.