In which of the following the metal is getting oxidised ?

1.	In which of the following the metal is getting oxidised ?
Answer» `CuO_((s))+H_(2(G))rarrCu_((s))+H_(2)O_((g))` `2FeCl_(3(aq))+H_(2(g))rarr 2FeCl_(2(aq))+2HCl_((aq))` `2K_((s))+F_(2(g))rarr2KF_((s))` `Fe_(2)O_(3(s))+3CO_((g))rarr2Fe_((s))+3CO_(2(g))` Answer :C

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