Zinc is obtained from its ore, zinc blende, by means of two chemical reactions. 1. $2\text{ZnS} + 3\text{O}_2 \rightarrow 2\text{ZnO} + 2\text{SO}_2$ 2. $2\text{ZnO} + \text{C} \rightarrow 2\text{Zn} + \text{CO}_2$ Which substance undergoes reduction in reactions 1 and 2?
- A$\text{O}_2$ ; $\text{C}$
- B$\text{O}_2$ ; $\text{ZnO}$
- C$\text{ZnS}$ ; $\text{C}$
- D$\text{ZnS}$ ; $\text{ZnO}$