15. From the abbreviated name of the compound Gal(β1 → 4)Glc, we know that:
(A) C-4 of glucose is joined to C-1 of galactose by a glycosidic bond.
(B) the compound is a D-enantiomer.
(C)the galactose residue is at the reducing end.
(D) the glucose is in its pyranose form.
(E) the glucose residue is the β anomer.