For a Particular Company Resource to Have Meaningful Competitive Power

For a particular company resource to have meaningful competitive power and perhaps qualify as a basis for competitive advantage,it should

A) be competitively important,hard for competitors to copy or imitate,rare and something rivals lack,and not be easily trumped by the substitute resources/capabilities of rivals.
B) be something that a company does internally rather than in collaborative arrangements with outsiders.
C) be patentable.
D) be rooted in the company's organizational capital,information capital,or human capital.
E) have the potential for lowering the firm's unit costs.