How do paragraphs 1-3 contribute to the text’s central ideas?

A
The first three paragraphs propose the central idea that the 1917 Bolshevik takeover was technically not a revolution.
B
The first three paragraphs lament the cost of the Russian Revolution and the negative change the country would experience under communist rule.
C
The  first paragraph defines “revolution” as a force of the people’s will to overthrow the government, as opposed to the incorrect use that describes a small party’s forceful coup; this introduces the central idea and question: was the Russian Revolution a true revolution?
D
The first three paragraphs introduce the idea that the Russian Revolution—rather than being a simple coup, in which sometimes the term “revolution” is incorrectly used—was a complex chain of events and causes.