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(> caso2(s)+co2(g)
c. caco3(s)+so2(g)+o2(g) --> caso4(s)+ co2(g)
d. ca(co3)2(s)+so2(g)+o2(> ca2so4(s)+co2(g)