Answer: B
Step-by-step explanation:
"BRUTUS: Impatient of my absence,
And grief that young Octavius with Mark Antony
Have made themselves so strong—for with her death
That tidings came. With this she fell distract,
And, her attendants absent, swallow'd fire."
(Act IV, Scene 3)
This basically explains how she was upset about Octavius and Antony gaining more power. Hope this helps!