GKFix MCQ Question

Which of the following reactions is an example of oxidation involving the removal of hydrogen?

• A. CH₄ + 2O₂ → CO₂ + 2H₂O
• B. Mg + S → MgS
• C. 2Na + H₂ → 2NaH
• D. 2H₂S + O₂ → 2S + 2H₂O