The correct option is B Trisaccharide
Raffinose is oligosaccharides (contain more than one sugar unit). Raffinose is trisaccharides containing three units of monosaccharides. It is composed of glucose, fructose, and galactose. They are found in cruciferous plants like Brussels sprouts, cabbage, cauliflower, broccoli and also in whole grains. Thus, the correct option is C.