The Conversion Factor Shown Below Was Obtained from the Balanced $\rightarrow$

The conversion factor shown below was obtained from the balanced chemical equation: 4 KO₂(s) + 2 CO₂(g) $\rightarrow$ 2 K₂CO₃(s) + 3 O₂(g) . This conversion factor would be used to calculate which of the following?

A) the amount of KO₂ required to react with a certain amount of O₂
B) the amount of O₂ that can react with a certain amount of KO₂
C) the amount of O₂ that can be produced from a certain amount of KO₂
D) the amount of KO₂ that is required to produce a certain amount of O₂