Identify the process of refining to obtain pig tin.

For the electrolytic refining of aluminium (Hoopes' process),the three fused layers consist of:

Bottom Layer	Middle Layer	Upper Layer

In the liquation process used for tin $(Sn)$,the metal

The cupellation process is used in the metallurgy of:

Give two requirements for vapour phase refining.

Given below are two statements.
Statement $I:$ During electrolytic refining,blister copper deposits precious metals.
Statement $II:$ In the process of obtaining pure copper by electrolysis method,blister copper is used to make the anode.
In the light of the above statements,choose the most appropriate answer from the options given below.