The Difference Between $\alpha$ - And $\beta$ -Glucose Is
A) in the Number of Covalent Bonds Present

The difference between $\alpha$ - and $\beta$ -glucose is

A) in the number of covalent bonds present.
B) in the placement of OH and H atoms.
C) in the type of R group attached to the terminal carbon.
D) that $\alpha$ -glucose is polar, whereas $\beta$ -glucose is nonpolar.
E) that $\alpha$ -glucose is a pentose, whereas $\beta$ -glucose is a hexose.