9) Consider the reaction: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g), where ΔH = –531 kcal. Which statement concerning this reaction is true?
A) Heat is absorbed.
B) The bonds formed in the products are stronger than the bonds broken in the reactants.
C) The products are higher in energy than the reactants.
D) The reaction is endothermic.