Which one of the following is true about proletariat?

Which one of the following is true about proletariat?
A: It is rule of capitalist class
B: It is government by the people
C: It means rule of educated classes
D: It means rule of the working classes

“Proletariat” denotes the working class in Marxist analysis. The term contrasts with the bourgeoisie; who own capital. Political appeals to the proletariat target labor rights; redistribution; and class emancipation.