Which of the following is the balanced form of the equation CH₄ + O₂ → CO₂ + H₂O?
(a) 2CH₄ + 3O₂ → 3CO₂ + 4H₂O
(b) CH₄ + 2O₂ → CO₂ + 2H₂O
(c) CH₄ + 5O₂ → CO₂ + 5H₂O
(d) CH₄ + O₂ → CO₂ + 2H₂O