Suppose that jean, the manufacturer of jean's finger-licking good ribs decided to begin selling his ribs to different supermarkets in florida. it costs jean the same amount of money to produce and distribute the ribs, but since he perceives publix to be a higher quality store than winn dixie, he decides to charge publix $150 per case and winn dixie $125 per case. this practice, which is known as ________, is illegal under the ________.