The statement that is true is this: THE PRODUCTS HAVE LOWER FREE ENERGY THAN THE REACTANTS.
An exergonic reaction is one in which energy is released in form of heat. Because of the heat lost during the reaction, the free energy of the product formed is less than the free energy of the reactants, the Gibb's free energy is therefore negative. Exergonic reactions are spontaneous in nature, that is, they do not need energy to proceed.
