Silicon reacts with a blend of calcium oxide and magnesium oxide at $1200\,^\circ\text{C}$. $2\text{MgO} + 2\text{CaO} + \text{Si} \rightarrow 2\text{Mg} + \text{Ca}_2\text{SiO}_4$ Which statement concerning this reaction is correct?
- ACalcium is reduced and silicon is neither oxidised nor reduced.
- BMagnesium is reduced and calcium is neither oxidised nor reduced.
- CMagnesium is reduced and silicon is neither oxidised nor reduced.
- DSilicon is reduced and calcium is neither oxidised nor reduced.