Which skeleton equation is correct for this question below:?
Calcium carbonate reacts with sulfur dioxide gas and oxygen gas to produce solid calcium sulfate and carbon dioxide gas. The correct skeleton equation for this reaction is:

A. CaCO(s)+SO(g)+O(g) --> CaSO(s)+CO(g)
B. CaCO2(s)+SO2(g)+O3(g)-->CaSO2(s)+CO2(g)
C. CaCO3(s)+SO2(g)+O2(g) --> CaSO4(s)+ CO2(g)
D. Ca(CO3)2(s)+SO2(g)+O2(g)-->Ca2SO4(s)+CO2(g)