【单选题】

According to the passage, which of the following statement is NOT true about fairy stories
A．If children indulged his fantasies in fairy tales instead of being taught how to adapt to reality by studying history and mechanics, the world should be full of madmen.

B．Children can often be greatly terrified when the fairy story is heard for the first time.
C．Fairy tales may beneficially direct children's aggressive, destructive and sadistic impulses.
D．Fairy tales are no more than stories about imaginary figures with magical powers which has nothing to do with external world.