Given the structural differences between lactose and cellobiose, which disaccharide is more likely to be digestible by most mammals?

• A. Both are equally digestible.
• B. Cellobiose, because it is found in cellulose and digestible by most mammals.
• C. Lactose, because it is commonly found in milk and digestible by most mammals.
• D. Neither is digestible by most mammals.

Answer: (C)