Which of the following assertions is true concerning the redox reaction of photosynthesis?

• A. Both CO2 and H2O are oxidized to glucose and oxygen
• B. Both CO2 and H2O are reduced to glucose and oxygen
• C. CO2 is reduced to glucose and H2O is oxidized to oxygen
• D. CO2 is oxidized to glucose and H2O is reduced to oxygen

Answer: (C)