Sonoco Products is one of the world's largest 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. Sonoco uses there recycled materials for 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