What reactants are used during photosynthesis? O A. C_{2}*H_{4} * O_{2} and H_{2}*O and chemical energy B. H_{2}*O and C*O_{2} and chemical energy C. H_{2}*O and C*O_{2} and sunlight energy D. C_{2}*H_{4} * O_{2} and H_{2}*O and sunlight energy