Copper is purified by electro-refining of blister copper. The correct statement (s) about this process is (are)

Copper is purified by electro-refining of blister copper. The correct statement (s) about this process is (are)
A. Impure copper strip is used as cathode
B. Acidified aqueous `CuSO_(4)` is used as electrolyte
C. Pure copper is deposited at cathode
D. Impurities settle as anode-mud.

Copper is purified by electro-refining of blister copper. The correct statement (s) about this process is (are)

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