Suppose that three book publishers were interested in the number of fiction paperbacks adult consumers purchase per month. each publisher conducted a survey. in the survey, adult consumers were asked the number of fiction paperbacks they had purchased the previous month. the results are as follows.

Leading guitar string producer wound up inc. has enjoyed a competitive advantage based on its proprietary coating that gives its strings a clearer sound and longer lifespan than uncoated strings. one of wound up's competitors, however, has recently developed a similar coating using less expensive ingredients, which allows it to charge a lower price than wound up for similar-quality strings. wound up's competitive advantage is in danger due to a. a lack of perceived value b. a lack of organization c. direct imitation and substitution d. resource immobility