Which of the following correctly summarizes the overall process of photosynthesis?

A) CO₂ + O₂ → H₂O + sugars
B) CH₂O + CO₂ + O₂ → H₂O + sugars
C) CO₂ + H₂O → H₂ + CO₂
D) CO₂ + H₂O → O₂ + sugars