6. The below table shows the Instruction Count (IC) for programs running on three processors P1, P2, and P3 with the clock rates 1.00 GHz, 3.50 GHZ, and 2.50 GHz respectively. Each program consists of only load, arithmetic, and store instructions. Showing all the steps, answer the following. Load Arithmetic Store CPI 4 5 3 IC for program 1 running on P1 300 400 100 IC for program 2 running on P2 250 100 50 IC for program 3 running on P3 350 50 150 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? (6 Points) C. If program 1 is run on processors P2 and P3, which processor (P1, P2, or P3) has the best performance in terms of CPU time and why? (2 Points)