Question

In Scene 3, line 38, Macduff greets Macbeth as a "worthy thane." This is an example of

dramatic irony because
O Macduff wants to steal the throne.
O Macduff suspects that Macbeth is a murderer.
O Macbeth is a poor host.
O Macbeth has just killed the king.

Answer 1

I think it's the last one