An Automobile Company Posts a Video of Its New Solar-Powered

An automobile company posts a video of its new solar-powered car on its page in a popular social networking site.This is an example of a firm

A) using paid media to create a brand image.
B) using social media for publicity.
C) applying personal selling to get immediate response.
D) conducting a social audit.
E) showing its support for corporate social responsibility through sales promotion.