Medium
In the extraction of iron,the reaction which occurs at $900-1500 \ K$ in the blast furnace is:
- A$Fe_2O_3 + 3C \rightarrow 2Fe + 3CO$
- B$FeO + CO \rightarrow Fe + CO_2$
- C$3Fe_2O_3 + CO \rightarrow 2Fe_3O_4 + CO_2$
- D$Fe_3O_4 + 4CO \rightarrow 3Fe + 4CO_2$
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