What does the film "Modern Times" (1936) tell us about factory labor and technology in the early 20th century?
a) It depicts factory labor as efficient and enjoyable due to technological advancements.
b) It portrays factory labor as monotonous and dehumanizing amidst rapid technological changes.
c) The film suggests that factory labor was non-existent in the early 20th century.
d) It highlights the luxurious lifestyles of factory workers during that time.