The equation for the reaction between carbon and carbon dioxide is given below. $\text{C} + \text{CO}_2 \rightarrow 2\text{CO}$ Which row shows the carbon atom that is reduced and the change in its oxidation number?
- Acarbon in $\text{CO}_2$; $+2 \rightarrow +4$
- Bcarbon in $\text{CO}_2$; $+4 \rightarrow +2$
- Celemental carbon, $\text{C}$; $0 \rightarrow +2$
- Delemental carbon, $\text{C}$; $+2 \rightarrow 0$