Refer to the Table Below, Which Summarizes Conditions Used in Four

Refer to the table below, which summarizes conditions used in four experiments in which isotopes were used to trace the fate of oxygen atoms during photosynthesis by a terrestrial green plant species. Which set of experiments would provide the best data for determining the source of O₂ produced by the plants?

A) Experiments 1 and 2
B) Experiments 2 and 3
C) Experiments 1 and 3
D) Experiments 1 and 4
E) Experiments 3 and 4