Consider three different processors P1, P2, and P3 executing the same instruction set with the clock rates and CPIs given in the following table. Processor Clock Rate CPI 1.5 3 1.0 3 3 3 3 GHz 2.5 GHz 4 GHz 2 GHz 3 GHz 4 GHz 2.2 1.2 0.8 2.0 P3 (a) Which processor has the highest performance expressed in instructions per second? (b) If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions. (c) We are trying to reduce the time by 30% but this leads to an increase of 20% in the CPI. What clock rate should we have to get this time reduction