Blocks of magnesium are fixed to the underside of a steel boat in order to stop rusting. Which equation represents a change that prevents the steel from rusting?
- A$\text{Fe} \rightarrow \text{Fe}^{3+} + 3e^{-}$
- B$\text{Fe}_2\text{O}_3 + 3\text{Mg} \rightarrow 2\text{Fe} + 3\text{MgO}$
- C$3\text{Mg}^{2+} + 2\text{Fe} \rightarrow 2\text{Fe}^{3+} + 3\text{Mg}$
- D$\text{Mg} \rightarrow \text{Mg}^{2+} + 2e^{-}$