Extraction of metal from the ore cassiterite does not involve:

Explain the extraction/purification of copper.

The incorrect statement about the Hall$-$Heroult process is:

Which of the following metals is extracted by the electrolytic reduction method?

In the extraction of iron using a blast furnace,to remove the impurity $(X)$,chemical $(Y)$ is added to the ore. $X$ and $Y$ are respectively

Statement $I :$ Leaching of gold with cyanide ion in absence of air $/$ $O_2$ leads to cyano complex of $Au(III)$.
Statement $II :$ Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements,choose the correct answer from the options given below.