A plant is experimented on twice. In the first experiment, it is placed in an aquarium under sunlight. In the second experiment, the plant is placed in an aquarium in total darkness. Gas bubbles form around the plant in both cases.

Which option correctly describes the kind of gases that form in light and dark environments?
-light: oxygen, carbon dioxide
dark: carbon dioxide
-light: oxygen, carbon dioxide
dark: oxygen
-light: carbon dioxide
dark: oxygen
-light: carbon dioxide
dark: carbon dioxide
HELP PLEASE