Which of the following statements is not correct about advertising and public relations? A. Advertisements can have both creative format and creative content. B. Product placement is a tool of public relation strategy. C. Comparative advertising is harmful to both companies. D. Public relations only cover the "positive" side, which relates to maintaining the normal brand image. For tools for consumer sales promotion, one tool requires an immediate price reduction, and another tool requires a delayed reduction. This difference refers to the comparison A. between coupon and premium 8. between sampling and premium C. between coupon and rebate D. between coupon and contests