Identify the pair of carbohydrates containing galactose as one of constituent in both of them.

Step-by-step solution

Sucrose is a disaccharide comprising -D-glucose and -D-fructose, lacking galactose. Maltose consists of two -D-glucose units and does not contain galactose. Lactose contains -D-galactose and -D-glucose, hence it includes galactose. Raffinose is a trisaccharide with D-galactose, D-glucose, and D-fructose; it contains galactose. Stachyose is a tetrasaccharide composed of two D-galactose, one D-glucose, and one D-fructose, thus containing galactose. Evaluating option pairs: Raffinose and Stachyose both incorporate gal