Given below are two statements related to Ellingham diagram :
Statement I : Ellingham diagrams can be constructed for formation of oxides, sulfides and halides of metals.
Statement II : It consists of plots of \( \Delta_{\mathrm{f}} H^{0} \) vs \( T \) formation of oxides of elements.
In the light of the above statements, choose the most appropriate answer from the options given below :
