Question

What is the significance of Malcolm's army carrying branches from Birnam wood to the castle?

A. The witches predicted Macbeth's army would be defeated only if Birnam wood comes to his castle.
B. It shows that Malcolm's army is mightier than Macbeth's and should easily defeat Macbeth.
C. Macbeth's castle is surrounded by Birnam wood and will be left unprotected without it.
D. Birnam wood is sacred, and destroying it shows Malcolm's greed and lust for power.