Which of the following is an epimeric pair?Group of answer choicesα-D-talose and β-D-taloseα-D-talose and α-L-taloseD-talose and D-idose

An epimeric pair refers to two sugars that differ only in the configuration around one carbon atom.

Looking at the options:

1. α-D-talose and β-D-talose: These are not epimers but anomers, as they differ in the configuration at the anomeric carbon (the carbon attached to the -OH group that determines whether the sugar is in the alpha or beta form).

2. α-D-talose and α-L-talose: These are not epimers but enantiomers, as they are mirror images of each other.

3. D-talose and D-idose: These are epimers. They differ only in the configuration around one carbon atom. In the case of talose and idose, they differ at the second carbon atom.

So, the correct answer is D-talose and D-idose.