How Monosaccharides are prepared​

The two monosaccharides are bonded via a dehydration reaction (also called a condensation reaction or dehydration synthesis) that leads to the loss of a molecule of water and formation of a glycosidic bond. The glycosidic bond can be formed between any hydroxyl group on the component monosaccharide.

I’m going to go with b!

You should never redesign your experiment. try and see what in your experiment you made a mistake on or try and test your experimemt with somebody else. see if they get the right results.