Balance the following equation:

c (s) + o2 (g) arrow co3 (g)
S PS-A Unit 4: Chemical Reactions X
2, 3, 2
2, 1, 1
3, 3, 2
1, 1,1

The balanced equation is:

C(s) + O2(g) -> CO2(g)

So, the correct answer would be 1, 1, 1.