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Assuming that cache memory is ten times faster than DRAM memory, that DRAM memory is 100,000 times faster than magnetic disk, and that flash memory is 1000 times faster than disk, find out how long it takes to read a file from a DRAM, a disk, and a flash memory if it takes 2 microseconds from the cache memory? Consider three different processors P1, P2, and P3 executing the same instruction set with clock rates and CPI's given in the following table. Must show calculations for credit. Processor Clock Rate CPI P1 2.25 GHz 1 P2 4.5 GHz 2.5 P3 3 GHz 1.5 a) Which processor has the highest performance? b) If the processors each execute a program in 10 seconds, find (a) the number of cycles and (b) the number of instructions for each./