For the MIPS pipeline we studies in class. Given a program that has the following instruction types: $20\%$ are loads, $20\%$ are stores, $20\%$ are simple branch, $10\%$ are complex branches and the remaining instructions are arithmetic. Based on this answer, the following: $($each section is independent of the others$)$ a$.$ What is the impact of the structural hazards on the CPI assume one memory unit is used to store instructions and data. What is the real CPI in this case. Assume no other hazards, and the latest version of the MIPS pipeline. Show your work. b$.$ What is the impact of the control hazards on the CPI assume $60\%$ of the branches are not taken. What the real CPI in this case. Assume no other hazards. Show your work c$.$ What is the impact of data hazards due to arithmetic instructions on the CPI when no forwarding is used assume $40\%$ of the arithmetic instructions $($i$)$ produce result needed by the next instruction $($i$+1)$ only $,$ and another $40\%$ produce result needed by the instruction $($i$+2)$ only, and the other $20\%$ produce results needed by $($i$+3)$ only. Show your work