Which Is the Correct Balanced Reaction for the Combustion of Octane

Which is the correct balanced reaction for the combustion of octane?

A) 2C₈H₁₈g) + 25O₂g) $\rightarrow$ 16CO₂g) + 18H₂Og)
B) C₈H₁₈g) + 12.5O₂g) $\rightarrow$ 8CO₂g) + 9H₂Og)
C) C₈H₁₈g) + 25Og) $\rightarrow$ 8CO₂g) + 9H₂Og)