In the Calvin cycle, which of the following best describes the sources of the elements that combine to make sugar?
A. The carbon and oxygen from carbon dioxide combines with the hydrogen and oxygen in water taken in during the Calvin cycle to make sugar.
B. The carbon, oxygen, and hydrogen from stored sugars are reprocessed during photosynthesis to make new sugar molecules.
C. The carbon and oxygen from carbon dioxide combine with the hydrogen taken from water during the light-dependent reactions to make sugars.
D. The carbon that is taken from carbon dioxide during the light-dependent reactions combines with the hydrogen and oxygen in water to make sugars.
