Which of the Following Correctly Describes Intermediates And/or Transition States

Multiple Choice

Which of the following correctly describes intermediates and/or transition states?

A) Transition states occur at minima on reaction coordinate diagrams.
B) Both transition states and intermediates occur at maxima on reaction coordinate diagrams.
C) An intermediate is always produced after the rate-determining step of a reaction mechanism.
D) Transition states have partially formed bonds whereas intermediates have fully formed bonds.
E) none of the above