Which Is True About Energy of Activation

Which is true about energy of activation?

A) Energy of activation is measured as the energy that is released after a reaction occurs.
B) Adding the correct enzyme can lower the energy of activation.
C) In any one metabolic pathway, all steps will have the same energy of activation.
D) Energy of activation is the difference between the energy of the reactant and the energy of the product.
E) The energy of activation is always lower than the energy of the reactant.