Which of the following is not one of the pitfalls of pursuing a differentiation strategy? a. over-emphasizing efforts to strongly differentiate the company's product from those of rivals rather than being content with weak product differentiation b. offering trivial improvements in quality, service, or performance features c. overcharging for the differentiating features adding so many frills and extra features that the product exceeds the needs of buyers d. overspending on efforts to differentiate the company's product offering