16. consider the three different processors executing the same instruction set with the clock rates and cpis given in the following table: processor clock rate cpi processor 1 2 ghz 1.2 processor 2 3 ghz 0.8 processor 3 4 ghz 2.0 a. (4 pts) which processor has the highest performance expressed in instructions per second? b. (4 pts) if the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions. c. (4 pts) it is desired to reduce the time by 25%, however this results in an increase of 15% in the cpi. what clock rate should be used to achieve the time reduction?