1.[Related to the Economics in Practice ] The Economics in Practice discusses the increase in sales of books that have been endorsed by Oprah Winfrey’s book club. While Oprah receives no payment for her book club endorsements, many celebrities are compensated greatly to endorse specific products, and for many products, these endorsements do appear to increase sales. However, celebrity endorsements can backfire as well, with the endorsement doing more harm than good for the product or company. Do some research and find information on a celebrity endorsement that actually hurt a company’s sales or reputation. What was the primary reason for this negative impact of the endorsement?