What is the chemical equation: CH4 + 2O2 →

Q. What is the chemical equation: CH4 + 2O2 →
(A) CO2 + O22H2
(B) CO2 + 2H2O
(C) C + O2 + 2H2O
(D) None of these

The answer is: (B) CO2 + 2H2O