In Act V of The Tragedy of Macbeth by William Shakespeare, why does Macbeth believe that Malcolm cannot harm him?


He approaches the castle from Birnam Wood. No man born of woman is Macduff.


He knows that Malcolm would not be able to approach the castle from Birnam Wood.


He knows that he is a much better swordsman than Malcolm.


He is overconfident in his ability to fight against Malcolm and his army.