Q7. the results of the spec cpu2006 bzip2 benchmark running on an amd barcelona has an instruction count of 2.389e12, an execution time of 750 s, and a reference time of 9650 s. a. (5 points) find the cpi if the clock cycle time is 0.333 ns. b. (5 points) find the specratio. c. (5 points) suppose that we are developing a new version of the amd barcelona processor with a 4 ghz clock rate. we have added some additional instructions to the instruction set in such a way that the number of instructions has been reduced by 15%. the execution time is reduced to 700 s and the new specratio is 13.7. find the new cpi.