When One Molecule of Propane, C₃H₈, Burns in a Gas

When one molecule of propane, C₃H₈, burns in a gas grill, it combines with five oxygen molecules to form three CO₂ molecules and four H₂O molecules. Select the statement below that is incorrect in regard to this reaction.

A) The balanced equation for the reaction is C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.
B) If 5 propane molecules react, 15 CO₂ molecules should form.
C) If 5 propane molecules react, 25 O₂ molecules must also react.
D) If 15 O₂ molecules react, 9 H₂O molecules should form.
E) If 12 CO₂ molecules are formed, then 4 propane molecules must have reacted.