Which Disaccharide Does NOT Have an Anomeric Carbon Available for Oxidation

Multiple Choice

Which disaccharide does NOT have an anomeric carbon available for oxidation?

A) Glc ( $\alpha$ 1 $\leftrightarrow$ 1 $\alpha$ ) Glc
B) Glc ( $\alpha$ 1 $\leftrightarrow$ 2 $\beta$ ) Fru
C) Fru ( $\beta$ 2 $\leftrightarrow$ 1 $\alpha$ ) Glc
D) both Glc ( $\alpha$ 1 $\leftrightarrow$ 2 $\beta$ ) Fru and Fru ( $\beta$ 2 $\leftrightarrow$ 1 $\alpha$ ) Glc
E) None of the above