Organic Chemistry HELPP

These two questions tie in together. Kind of tricky..please help

?-D-Glucose and ?-D-glucose can best be described as:

Answer a.

diastereomers

b.constitutional isomers

c.different conformations

d.enantiomers

e.keto-enol isomers

?-D-Glucose and ?-D-glucose can best be described as:

Answer

a.an…