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15 Assume the following specifications for the next questions: CPU base CPI = 2, clock rate = 5GHz Miss rate/instruction = 2% Main memory access time = 60ns With just one primary cache, the effective CPI is: (1 Point) O 2 06 08 O 3 OS None of stated options 16 Consider above question. Now, assume we add L2, which has the following specifications: Access time = 4ns Global miss rate to main memory = 0.5% With L1 and 12, the effective CPI is. (1 Point) 0 4.5 053 03.9 02.9 None of stated options