Identify the non-reducing sugar from the following.

Sucrose molecule is made up of

How many optical isomers does glucose have?

Which of the following carbohydrates has the $L$-configuration?

Which monosaccharide units are present in starch,cellulose,and glucose,and which linkages connect these units?

Given below are two statements:
Statement $I$: Sucrose is dextrorotatory. However, sucrose upon hydrolysis gives a solution having a mixture of products. This solution shows laevorotation.
Statement $II$: Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose, the resulting solution becomes laevorotatory.
In the light of the above statements, choose the correct answer from the options given below.