Which other elements of theory were mentioned in what we covered? Select all that apply. a. Reserve army of labor as helping keep workers at a disadvantage b. Commodity fetishism as obscuring relations between workers and workers or workers and consumers c. Classical vs. ballot box socialism, where the latter is criticized by the former. d. Neomarxist theory in the 20th century e. Imperialism as a venture that capitalism could easily avoid if it chose to. f. Violence as systemic or structural in that it includes the material ravages wrought on workers by a system of production g. Prehistoric communism as the mode of production in hunter-gatherer societies h. Monpolies as a natural result of capitalistic competition