Oxygen gas is an important byproduct of photosynthesis for animals and other organisms. What is true about how oxygen gas is produced during photosynthesis?
O A. Water is split apart during the Calvin cycle and results in oxygen gas
O B. Carbon dioxide is split apart during the Calvin cycle and results in oxygen gas
O C. Carbon dioxide is split apart during the Light reactions and results in oxygen gas
O D. Water is split apart during the Light reactions and results in the oxygen gas