38. Which of the following statements concerning phosphorescence is INCORRECT?
(A) Phosphorescence is the emission of light resulting from the spin-forbidden transition from an excited triplet state to the singlet ground state.
(B) The phosphorescence quantum yield depends on the efficiency of intersystem crossing.
(C) Heavy atoms enhance phosphorescence by increasing spin-orbit coupling and promoting intersystem crossing.
(D) Phosphorescence emission disappears immediately when the excitation source is removed.
(E) Intersystem crossing from an excited singlet state to a triplet state precedes phosphorescence.