Sulfur undergoes a redox reaction with concentrated nitric acid. $\text{S} + 4\text{HNO}_3 \rightarrow \text{SO}_2 + 4\text{NO}_2 + 2\text{H}_2\text{O}$ State the changes in oxidation number for sulfur and for nitrogen in this reaction.
- Asulfur: $+2$, nitrogen: $-3$
- Bsulfur: $+2$, nitrogen: $-1$
- Csulfur: $+4$, nitrogen: $-3$
- Dsulfur: $+4$, nitrogen: $-1$