Which Statement Best Describes Guerrilla Marketing

Which statement best describes guerrilla marketing?

A) It is a defensive strategy that places counter-advertising in a market targeted against strong competitive products.
B) It is a free promotion initiated by fans, loyal customers, or other interested product users.
C) It is a relatively new approach to promotion that avoids traditional media and attempts to find innovative, low-cost ways to reach a target market.
D) It is 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.