In plants, the process of photosynthesis produces glucose (C6H12O6) and oxygen from carbon dioxide and water. Which of the following options about photosynthesis is consistent with this statement?

A) Water is synthesized by the plant from H2 and O2.

B) More atoms are present at the beginning than at the end.

C) All of the carbon atoms in glucose came from carbon dioxide.

D) More carbon dioxide is released from the plant than is absorbed.