question 1: performance the hardware implementation of a program uses three different classes of instructions: 4 of class a, 2 of class b, and 3 of class c, that require 1, 1.5, and 2 cycles, respectively (table below). this program is run on processor cpu a which has a clock rate 4.8 ghz and processor cpu b that is 25% slower than cpu a. what is the cpi (cycles per instruction) for the program?