(A) Starch is a non reducing sugar. It contains -glycosidic bond.
(B) Sucrose is a non reducing sugar. It contains -glycosidic bond.
(C) Lactose shows mutarotation. It contains -glycosidic bond. It is a reducing sugar and contains hemiacetal.
(D) Maltose shows mutarotation. It contains -glycosidic bond.It is a reducing sugar and contains hemiacetal.