Consider an iPhone 12 processor with 2.99 GHz clock rate (CPI = 0.2), iPhone 11 processor with 2.65 GHz clock rate (CPI = 0.14), a Samsung Galaxy s21 processor with 2.9 GHz clock rate (CPI = 0.16), and a Galaxy s20 processor with 2.73 GHz clock rate (CPI = 0.18). The CPI measurements were established benchmarking a particular application program with 150 million instructions. 1. (40) What is the processor execution time for each device? 2. [10] Which device will you select to run your application and explain the reasoning for your selection in detail used the performance variables? 3. [50] In an attempt to keep improving on devices in Problem 1 to execute the application program more efficiently, you are tasked to design a system that improves performance by least 25%. Explain how you would improve each processor and what would be the target performance variables for the processors in each device be