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3. (6 points) On a pipelined MrPS processor, the breakdown of instructions exeeuted for an application is shown below. 10% of the memory accesses result in one eycle pipeline stall. a) Assume all branch instructions have one cycle penalty as the instruction following the branch is delayed. What is the CPI of the application? Show all the calculation steps. (3) points) b) Assume in a certain design, if the branch is not taken, there is no performance penalty. If the branch is taken, there is one cycle penalty. Suppose 60% of the branch instructions are taken. What is the CPI of the application? Show all the calculation steps. ( 3 points)