GKFix MCQ Question

How is the percentage of oxygen expressed in terms of CO₂?

• A. (88 × m × 100)/(32 × m₁)
• B. (32 × mass of CO₂ × 100)/(88 × mass of compound)
• C. (32 × m × 100)/(88 × m₁)
• D. (88 × m₁ × 100)/(32 × m)