Formation of metallic copper from sulphide ore in te normal thermometallurgical process essentially involves which of the following reactions
A. `CuS +(3)/(2)O_(2) rarr CuO +SO_(2), CuO +C rarr Cu +CO`
B. `CuS + (3)/(2) O_(2) rarr CuO +SO_(2),2CuO +CuS rarr 3Cu +SO_(2)`
C. `CuS +2O_(2) rarr CuSO_(4),CuSO_(4) +CuS rarr 2Cu +2SO_(2)`
D. `CuS +(3)/(2)O_(2) rarr CuO +SO_(2),CuO +CO rarr Cu +CO_(2)`
