Which of the following statements is TRUE about the psychoanalytic theory of play?

A) According to this theory, play can be used to both diagnose and treat mental health conditions in children.
B) This theory recognizes the importance of fantasy in the emotional and mental health of children.
C) According to this theory, children act out play scenarios to help them master anxiety and disturbing thoughts.
D) It is one of the "classical" theories of play.