Fresnas Inc. is a furniture manufacturing company. It has taken the initiative of incorporating social responsibility as one of the firm's new foundations. In order to carry out the business in the favor of its clients as well as the environment, the company uses a third-party eco-logo that indicates the use of recycling as a method of production and focuses on the primary benefits of their products that save their customers' money. Which of the following marketing techniques has been implemented by Fresnas Inc.?a. Green marketing
b. Cause marketing
c. Undercover marketing
d. Relationship marketing