Maltotriose is found in malted grains and is a product of the breakdown of starch. Based on its Haworth structure, what monosaccharide units are present in maltotriose?

• A. two units of α-D-glucopyranose and one unit of β-L-glucopyranose
• B. three units of α-D-glucopyranose
• C. three units of β-D-galactopyranose
• D. two units of β-D-galactopyranose and one unit of α-L-galactopyranose

Answer: (B)