Legendary investor Warren Buffett said: "The single most important decision in evaluating a business is pricing power. If you've got the power to raise prices without losing business to a competitor, you've got a very good business. And if you have to have a prayer session before raising the price by 10%, then you've got a terrible business." a. Based on his statement, analyse FOUR (4) roles of pricing in the marketing program. Provide relevant examples for each role