Reduction of a metal oxide by excess carbon at high temperature is a method for the commercial preparation of some metals. This method can be successfully applied in the case of:

High-temperature reduction of a metal oxide by surplus carbon is a technique used to prepare certain metals for commercial use. In the cases of $\mathrm{ZnO}$ and $F{e}_2{O}_3$, this approach can be effectively used.

Some metals are produced commercially by reducing metal oxide by excess carbon at high temperatures. It's known as smelting.

Less electropositive metals including Pb, Zn, Fe, Sn, and Cu are melted.

Therefore, $\mathrm{ZnO}$ and $F{e}_2{O}_3$ may both be reduced using this approach.

Hence, option B is correct.