Shakespeare's Macbeth, Act V Scene 5

MACBETH. She should have died hereafter;
There would have been a time for such a word.
Tomorrow, and tomorrow, and tomorrow
Creeps in this petty pace from day to day
To the last syllable of recorded time;
And all our yesterdays have lighted fools
The way to dusty death. Out, out, brief candle!
Life's but a walking shadow, a poor player
That struts and frets his hour upon the stage
And then is heard no more. It is a tale
Told by an idiot, full of sound and fury,
Signifying nothing.

Which line refers to the meaninglessness of life?

A. "All our yesterdays have lighted fools/ The way to dusty death."
B. "To-morrow, and to-morrow, and to-morrow,/ Creeps in this petty pace from day to day,"
C. "Out, out, brief candle!"
D. "full of sound and fury,/ Signifying nothing."

In the excerpt of the tragedy of Macbeth provided,Seyton, an officer attending on Macbeth, informs him of the death of the Queen. Lady Macbeth plays a predominant role in Macbeth's life for it was she who encouraged Macbeth to take the necessary actions to fulfill his fate. The absence of so great a companion forces him to find no meaning nor significance in life. He became Thane of Cawdor and then king, but it might all seem for no reason for his ambition consumed him.