Which of the Following Is Not One of the Four

Which of the following is not one of the four basic routes to achieving a differentiation-based competitive advantage?

A) Delivering value to customers via competencies and competitive capabilities that rivals don't have or can't afford to match
B) Incorporating features that raise product performance
C) Incorporating product attributes and user features that lower the buyer's overall costs of using the company's product
D) Appealing to buyers who are sophisticated and shop hard for the best, stand-out differentiating attributes
E) Incorporating features that enhance buyer satisfaction in intangible or non-economic ways