5. The table below shows the runtime for those programs on three different computers Program Execution time in seconds Computer A Computer B Computer C Program 1 Program 2 Program 3 12 20 40 15 20 50 20 20 10 a) Which computer is fastest according to total execution time? How many times as fast is it compared to the other two computers? One user has told you that the three programs constitute the bulk of his workload, but he does not run them equally. The user wants to determine how the three computers compare when the workload consists of dfferent mixes of these three programs. That is, program 1 runs 10 times for every time program 3 runs, and program 2 runs 4 times for every time program 3 runs Find which computer is fastest for this workload and by what factor. How does this compare with the total execution time with equal numbers of program executions? b)