6. The below table shows the instruction count (IC) for programs running on three processors P1, P2, and P3 with the clock rates 1.0 GHz, 2.0 GHZ, and 2.5 GHz respectively. Each program consists of only Load/store, arithmetic, and branch instructions. Answer the following. Load/store Arithmetic Branch CPI 5 3 4 IC for program 1 running on P1 500 450 10 IC for program 2 running on P2 800 1050 20 IC for program 3 running on P3 750 550 25 a. What is the average CPI for each of the program running on processors P1, P2, and P3? (9 Points) b. What is the CPU time for the programs running on processors P1, P2, and P3? (9 Points) c. What is the new clock rate that is required for processors P1, P2, and P3 so that the time spent by the program on each of the processors is 2 s? (9 Points)