9. Which of the following descriptions regarding disaccharide is incorrect? (A) Sucrose is α-D-glucopyranosyl (1-2) β-D-fructopyranoside (B) Sucrose is a non-reducing sugar (C) Maltose has an a(1→4) linkage (D) Cellobiose is β-D-glucopyranosyI (1→4) β-D-glucopyranose (E) Lactose is a reducing sugar.