What Is the Current Status of Freud's Idea That Psychic

What is the current status of Freud's idea that psychic energy is limited?

A) This idea has stood the test of time and empirical scrutiny.
B) The newer idea is that the mind's processing capacity is limited rather than psychic energy.
C) No research has tested this idea, so little can be said about it.
D) This is an idea that trained psychoanalysts tend to reject but academic researchers tend to favor.