25. Which of the following shows the overall equation for the light reactions? (A) 2 H2O + 1 NADP+ → 1 H+ + O2 + 1 NADPH, requires 4 photons (B) 2 H2O + 1 NADP+ → 1 H+ + O2 + 1 NADPH, requires 8 photons (C) 2 H2O + 2 NADP+ → 2 H+ + O2 + 2 NADPH, requires 4 photons (D) 2 H2O + 2 NADP+ → 2 H+ + O2 + 2 NADPH, requires 8 photons (E) 2 H2O + 2 NADP+ → 2 H+ + O2 + 2 NADPH, requires 16 photons