Read the passage.

macduff. hail, king! for so thou art: behold, where stands
th’ usurper’s cursèd head. the time is free.
i see thee compassed with thy kingdom’s pearl,
that speak my salutation in their minds,
whose voices i desire aloud with mine:
hail, king of scotland!

what is the main idea of this passage from act v of the tragedy of macbeth by william shakespeare?

macduff anticipates that he will be king.
macduff is acknowledging that macbeth is a traitor to the throne.
macduff anticipates that king duncan will be king.
macduff is hailing macbeth as the rightful king of scotland.