Which of the following statements concerning carbohydrates is true?
A. Carbohydrates include sugars, starches, and amino acids.
B. Sucrose is the primary source of energy for most cells.
C. Maltose is a complex carbohydrate.
D. Most carbohydrates come from animal products.
E. The primary role of carbohydrates is to serve as an energy source.
Answer: E
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