How Did Radio and Movies Revolutionize the Mass Culture

How did radio and movies revolutionize the mass culture?

A) Through marketing and advertising,people were made aware of new products.
B) People were able to see items for the first time before they bought them.
C) They showed people how to use items in different ways that they had not considered.
D) They were able to break people of old stereotypes and people became more accepting.
E) They were able to keep informed of the latest events around the world.