Jacob has a rare condition, an inborn error of metabolism that prevents his body from storing glucose as glucose. Every four hours, day and night, Jacob has to consume a solution that provides a source of glucose, which is slowly digested and absorbed by the intestinal tract. Which of the following foods should Jacob mix water to form his life-saving solution?
A. Corn starch
B. Aspartame
C. Saccharin
D. High-fructose corn syrup