According to the text, examples of cases used in case studies could be all of the following EXCEPT:

Product planners need to consider products and services on three levels. At the second level, product planners must ________

A) offer additional product support and after-sale services B) identify the core customer value that consumers seek from the product C) turn the core benefit into an actual product D) find out how they can create the most satisfying brand experience E) define the problem-solving benefits or services that consumers seek

A well-thought-out plan for establishing, building, and maintaining quality relationships is a:

A) relationship strategy B) customer strategy C) product strategy D) presentation strategy E) personal selling philosophy