Answer the Following Questions Using the Information Below

Answer the following questions using the information below:
Stewart Corporation plans to grow by offering a sound system, the SS3000, that is superior and unique from the competition.Stewart believes that putting additional resources into R&D and staying ahead of the competition with technological innovations is critical to implementing its strategy.
-Stewart's strategy is

A) product differentiation.
B) downsizing.
C) reengineering.
D) cost leadership.
E) salability.