Question

MACBETH, aside. The Prince of Cumberland! that is a step
On which I must fall down, or else o'erleap,
For in my way it lies. Stars, hide your fires;
Let not light see my black and deep desires:
The eye wink at the hand; yet let that be,
Which the eye fears, when it is done, to see.

William Shakespeare, Macbeth, Act I, scene iv
What future event does this passage foreshadow?
A. Macbeth becoming Prince of Cumberland
B. The king killing Macbeth
C. Macbeth killing Malcolm
D. Macbeth killing the king