Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood liberated hydrocarbon gase

Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood liberated hydrocarbon gases like `(CH_(4))`. The process X is called _____ and the Metal contains impurity of Y is ____:
A. X=cupellation, Y=`CuO_(2)`
B. X=poling, Y=`Cu_(2)O`
C. X=poling, Y=CuO
D. X=cupellation, Y=CuO

Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood liberated hydrocarbon gases like `(CH_(4))`. The

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