Three reactions taking place in the extraction of aluminium from purified bauxite are shown below. 1 $\text{Al}^{3+} + 3e^{-} \rightarrow \text{Al}$ 2 $\text{C} + \text{O}_2 \rightarrow \text{CO}_2$ 3 $2\text{O}^{2-} \rightarrow \text{O}_2 + 4e^{-}$ Which of these reactions happen at the anode?
- A1 and 2
- B1 only
- C2 and 3
- D3 only