Consider a computer running a program that requires 250 s, with 70 s spent executing FP instructions, 85 s spent executing INT instructions, 55 s spent executing L/S instruction, and 40 s spent executing branch instructions. a. By how much is the total time reduced if the time for FP operations is reduced by 20% ? b. By how much is the time for INT operations reduced if the total time is reduced by 20% ? c. Can the total time be reduced by 20% by reducing only the time for branch instructions