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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 4.8GHz and Processor CPUB that is 25% slower than CPU_A. 1. What is the CPI (cycles per instruction) for the program? 2. What is the execution time for the program on CPU_A? 3. What is the clock cycle time of CPUB