Charlie Chaplin's 1929 Movie,Modern Times,was a Humorous Critique of the Factory

Charlie Chaplin's 1929 movie,Modern Times,was a humorous critique of the factory work of his time.The film is interesting because it suggests that:

A) factories offered humane working conditions
B) machines were used for the benefit of the workers
C) workers were used for the benefit of the machines
D) management was open to employee contribution
E) machines replaced workers