Which of the Following Marketing Efforts Is an Example of a Social

Which of the following marketing efforts is an example of a social marketing campaign?

A) McDonalds provides healthy eating options for children.
B) Tobacco companies show warnings against smoking on cigarette packets.
C) Coca cola uses the tag-line 'Open Happiness' to encourage consumers to purchase Coca Cola over competing products and brands.
D) A public health campaign encourages university students to not drink and drive by providing taxi discount vouchers.
E) All of these options.