Which of the Following BEST Describes Guerrilla Marketing

Which of the following BEST describes guerrilla marketing?

A) a defensive strategy that places counter-advertising in a market targeted against strong competitive products
B) free promotion initiated by fans, loyal customers, or other interested product users
C) a relatively new approach to promotion that avoids traditional media and attempts to find innovative, low-cost ways to reach a target market
D) any negative campaign against a product or a company because of poor performance, incited by angered consumers who share experiences on blogs and message boards