Which one of the following is a non reducing sugar

A) All monosaccharides are reducing sugars;B) All polysaccharides are non reducing non sugars;C) Disaccharides like maltose and lactose are reducing sugars;D) Sucrose is a non reducing sugar because it does not contain free aldehyde group or anomeric -OH group;    A glycosidic linkage is present between C-1 of α-D-glucose and C-2 of β-D-fructose;   No free -OH group is present on functional group(anomeric) carbon;