Potassium chlorate decomposes according to the following chemical equation: 2KClO3 ---> 2KCl + 3O2, If you start with 458 g of KClO3, what mass (g) of O2 will be produced?

A. 83.71 L O2
B. 179.39 L O2
C. 687 L O2
D. 67.2 L O2