Which of the Following Statements Is the Best Statement of the Hammond

Which of the following statements is the best statement of the Hammond Postulate?

A) In an endothermic reaction, the transition state is closer to the reactants in structure.
B) In an exothermic reaction, the transition state is closer in energy to the products.
C) Related species that are similar in energy are also similar in structure.
D) The structure of the transition state in an organic reaction is always modeled on the structure of the reactants leading to that transition state.
E) Transition states are molecular species of finite lifetime whose properties can be probed through free radical reactions.