Why was the breakdown of the second triumvirate integral to the formation of the Roman Empire?

Question

A) Marc Antony was the greatest foe of Octavian; with Antony dead, Octavian could seize control of the vast resources of Egypt and firmly keep control Rome without interference.
B) The breakdown of the second triumvirate brought an end to any competition for control of the armies and subsequently Roman territory. All that was required for the formation of Empire was the implementation of social policies that would garner the support of the citizens.
C) Marcus Crassus made his fortune off of those murdered by the dictator Sulla. He owned the majority of territory in the city of Rome. Once his assets were seized after his death, consistent control could be dictated in Rome and the rest of the territories would soon follow.
D) The breakdown of the second triumvirate brought an end to any competition for control of the armies and subsequently Roman territory. Therefore, the last general standing was in control.
E) One supreme ruler had been attempted many times prior to the breakdown of the second triumvirate. It was successful this time because the citizens were exhausted from almost one hundred years of civil war.

Answer 1

B