Sonoco Products is one of the world's larges packaging companies. It instituted a recycling program in 1990. The company takes back its used boxes from customers, so they don't have to worry about disposal of them. Sonoco uses this recycled materials to make more than two-thirds of its raw materials. This is an example of:
A) cause-related marketing.
B) green marketing.
C) consumerism.
D) product-related marketing
E) stakeholder marketing.
Answer: B