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

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