Iron is obtained from hematite in the blast furnace. Which reaction raises the temperature in the blast furnace above $1500\,^{\circ}\mathrm{C}$?
- A$\text{calcium carbonate} \rightarrow \text{calcium oxide} + \text{carbon dioxide}$
- B$\text{calcium oxide} + \text{silicon(IV) oxide} \rightarrow \text{calcium silicate}$
- C$\text{carbon} + \text{oxygen} \rightarrow \text{carbon dioxide}$
- D$\text{carbon dioxide} + \text{carbon} \rightarrow \text{carbon monoxide}$