For the reaction \mathrm{C}_{2} \mathrm{H}_{4}(\mathrm{~g})+\mathrm{H}_{2}(\mathrm{~g}) \rightarrow \mathrm{C}_{2} \mathrm{H}_{6}(\mathrm{~g}) \quad \Delta \mathrm{H}=-137 \mathrm{~kJ} / \mathrm{mol} А. The total energy used to break the bonds in the reactants is equal to the

total energy released when the bonds are formed in the products. В.The number of bonds formed is less than the number of bonds broken. С.The number of bonds formed is greater than the number of bonds broken. D.The total energy used to break the bonds in the reactants is less than the total energy released when the bonds are formed in the products.