A$)(5$ Points$)$ We want to improve the performance of the processor in Question $2$ by increasing the number of stages from $5$ to $6.$ Which stage should we split into two to achieve the best performance increase. Write a brief explanation to go with your answer.

B$)(7$ Points$)$ Using the stage you picked in part B$,$ assume we can split the stage into two new stages. Assume that this does not increase the number of stalls on a given program vs when running on the $5$ stage version of the CPU. What is the expected speedup on this program?

C$)(8$ Points$)$ Now assume that before the improvement, on a different program, our $5$ stage CPU had a CPI of $1\mathrm{.}4.$ With our $6$ stage CPU, the CPI slightly increased to $1\mathrm{.}7$ due to needing to stall more with the extra stage. Do we achieve a speedup on this program as well or a slowdown? What is the value of the speedup or slowdown?