Which of the following is true?
A) In a reaction mechanism, an intermediate is identical to an activated complex.
B) The rate-determining step of a reaction is the rate of the fastest elementary step of its mechanism.
C) If we know that a reaction is an elementary reaction, then we know its rate law.
D) Since intermediate compounds can be formed, the chemical equations for the elementary reactions in a multistep mechanism do not always have to add to give the chemical equation of the overall process.
E) All of the above statements are true.