How Does Karl Marx Differentiate Between Members of the Proletariat

How does Karl Marx differentiate between members of the proletariat and the bourgeoisie?

A) Members of the proletariat own the means of production, while the bourgeoisie possess only their own labor.
B) Members of the proletariat benefit directly from their own labor, while the bourgeoisie do not.
C) Members of the proletariat have a greater sense of solidarity than do those of the bourgeoisie.
D) Members of the proletariat have vast amounts of investment wealth.
E) Members of the bourgeoisie own the means of production, while the proletariat possess only their own labor.