The Heat Energy Released or Absorbed by a Chemical Reaction

The heat energy released or absorbed by a chemical reaction is generally determined by the difference between the energy that

A) must be put in to break the bonds in the reactants and the energy that must be put in to make the bonds in the products.
B) must be put in to break the bonds in the reactants and the energy that is released upon making the bonds in the products.
C) is released upon breaking the bonds in the reactants and the energy that must be put in to make the bonds in the products.
D) is released upon breaking the bonds in the reactants and the energy that is released upon making the bonds in the products.

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