Which of the following is NOT true of the cave scenario that Socrates describes?
a. The prisoners are watching the shadows on the cave wall, believing them to be reality.
b. The cave represents a world of illusion and ignorance, from which the philosopher must escape to find true knowledge.
c. The prisoners are able to turn their heads and see the objects that cast the shadows on the wall.
d. The philosopher is the one who escapes the cave and discovers the truth, then returns to try to enlighten the other prisoners.