Consider three different processors P1, P2, and P3 executing the same instruction set: . P1 has a 3.5 GHz clock rate and a CPI of 1.5 . P2 has a 2.0 GHz clock rate and a CPI of 1.0 P3 has a 4.0 GHz clock rate and a CPI of 2.5 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 for each processor. C) We wish to reduce the execution time to 8 seconds, but this leads to a 25% increase in CPI. What clock rate would we need for each processor to get this time reduction