Which polysaccharide is highly branched?

Given below are two statements:
Statement $I:$ Fructose does not contain an aldehydic group but still reduces Tollen's reagent.
Statement $II:$ In the presence of base,fructose undergoes rearrangement to give glucose.
In the light of the above statements,choose the correct answer from the options given below:

Identify the intermediate formed in the given reaction of $D$-glucose with methanol in the presence of an acid catalyst $(H^+)$.

Fructose on reduction gives a mixture of two alcohols which are related as

Which of the following statements is $CORRECT$ about saccharic acid?

Sugar which does not give reddish brown precipitate with Fehling's reagent is: