Which answer would score higher? Not sure where to start? Explain this Answer A Mᵣ(CuO) = 80, so theoretical copper = 20.0 × 64 ÷ 80 = 16.0 g; yield = 16.0 ÷ 14.4 × 100 = 111%, and some copper may be lost during separation. Answer B Mᵣ(CuO) = 80, so theoretical copper = 20.0 × 64 ÷ 80 = 16.0 g; yield = 14.4 ÷ 16.0 × 100 = 90.0%, and some copper may be lost during separation.