Which of the following carbohydrates is a non-reducing sugar?

Step-by-step solution

Reducing sugars are carbohydrates that contain a free aldehyde or ketone group, allowing them to reduce Tollens' or Fehling's reagents. All monosaccharides, including glucose, fructose, and mannose, have a free anomeric carbon and are therefore reducing sugars. Sucrose is a disaccharide formed by the condensation of -D-glucose and -D-fructose. The glycosidic linkage involves the anomeric carbon of glucose (C1) and the anomeric carbon of fructose (C2). Since both anomeric carbons are involved in the bond formation,