Which of the following statements regarding digestion and absorption of carbohydrates is true?
a. Carbohydrate digestion begins in the stomach.
b. Lactose intolerance results from an insufficiency of the enzyme, amylase.
c. Digestible polysaccharides are broken down into the monosaccharides glucose, galactose and fructose, which can be absorbed.
d. Sucrose is the main form of carbohydrate that can be absorbed by active transport across the intestinal epithelium.
e. Cellulose from plants is a polymer of glucose that can be easily digested and absorbed by the human GI tract.