How does carbon flow between photosynthesis and cellular respiration?

a. Photosynthesis produces carbon dioxide from glucose generated by the process of cellular respiration.

b. Cellular respiration produces carbon dioxide from glucose generated by the process of photosynthesis.

c. Photosynthesis produces carbon dioxide from ATP generated by the process of cellular respiration.

d. Cellular respiration produces carbon dioxide from ATP generated by the process of photosynthesis.