Cameras R Us has had the X12 model of their digital camera on the market now for five years. Since the development of the X12, Cameras R Us has discovered from various marketing research studies that customer attribute preferences have changed. Based on these discoveries, they have developed and released the new Z35 model. Since the X12 model is still selling, the company had decided to keep it on the market but to redirect its marketing expenditures solely to the Z35. What strategy is Cameras R Us using with their X12 model