Question 2:(8points) Assume a MIPS ISA has1 GHz clock rate and with 4 types of instruction = {ALU, Branch, SW, LW}. Each instruction type needs the following number of clock cycle respectively, {ALU, Branch, SW, LW} = {4,3,5,6}. If there are total 300 million instructions, what is the CPU time for this system? Assume that, ALU, Branch, and SW instructions consists of 66.67%, 10%, 13.33% of the total instructions.