Macbeth Act 4 Scene 2:
Why does Macbeth order Macduff's family killed?

A. He is jealous that Macduff has children and he does not.
B. Macbeth will do anything to protect his rule on the throne.
C. Macbeth sends murders to kill all the children in Scotland.
D. Macbeth has them murdered because Macduff's son insulted him.