A Good Example of Source Reduction Would Be

A good example of source reduction would be:

A) burning old tires to generate usable energy.
B) finding uses for discarded computers and other high technology equipment.
C) the lighter weight of aluminum cans compared to 30 years ago.
D) installing air pollution control devices in incinerators.
E) increasing the percentage of paper, glass, and aluminum that is recycled in the United States.