As a delivery company, no one delivers better than Pizzeria. Its reputation for hot pizza in 30 minutes or less is ingrained in customers' minds. But not long ago, Pizzeria began hearing its customers talking about how its pizza was horrible. As a company that has long focused on solid marketing intelligence to make decisions, Pizzeria went to work on how it could change consumer perceptions about its pizza. Through marketing research techniques, Pizzeria soon realized that it had to take a very risky step and completely recreate the pizza that it had been selling for over 40 years. This finding not only enabled Pizzeria to come up with a winning recipe, but led to a successful promotional campaign that has made success with the pizza fans in addition to its delivery service. Question: Being the manager of marketing at Pizzeria, how would you have evaluated the change of attitude of the fans towards the brand through the advertising campaign