Classify the pairs of compounds listed below as enantiomers, diastereomers, or anomers.
i. α-lactose and β-lactose
ii. D-idose and L-idose
iii. D-mannose and D-altrose

• A. i. anomers; ii. diastereomers; iii. diastereomers
• B. i. anomers; ii. diastereomers; iii. enantiomers
• C. i. anomers and diastereomers; ii. enantiomers; iii. diastereomers
• D. i. anomers and enantiomers; ii. enantiomers; iii. diastereomers

Answer: (C)