5. (20%) Performance. Assume processors P1, P2, P3 have same instruction set. P1 P2 5 GHz P3 2 GHz 4 GHz Clock Rate CPI 12 5 1) Which processor has the best performance? 2) For processor P1, if it can execute a program in 10 seconds, find the number of instructions and number of cycles for this processor. 3) For processor P2, we are trying to reduce the execution time by 30% but it leads to an increase of 20% in the CPI. What should be the new clock rate of this processor