Titanium oxide, $\text{TiO}_2$, is used as a ‘whitener’ in toothpaste. It is produced from the ore iron(II) titanate, $\text{FeTiO}_3$. What change, if any, occurs in the oxidation number (oxidation state) of titanium during the reaction $\text{FeTiO}_3 \rightarrow \text{TiO}_2$?
- AIt is oxidised from $+3$ to $+4$.
- BIt is reduced from $+3$ to $+2$.
- CIt is reduced from $+6$ to $+4$.
- DThere is no change in the oxidation number.