follows closely behind the CPU and memory in determining the overall effectiveness of a computer system. Virtual memory The fetch/decode/execute cycle Disk I/O None of these is correct. Question 36 5 pts Assume you have two upgrade options at the same cost. Option 1: upgrade to a CPU that's 50% faster or option 2: upgrade the 1.O system to make it 100% faster. Assume processes spend 80% of their time running in the CPU and 20% of their time waiting for disk service. Which option would you pick? Option 1 The two options have the same speed up Option 2 MacBook Air