There are the following options: Option A: Reduce the CPI of instruction type A to 1.1 Option B: Reduce the CPI of instruction type B to 1.2 of the two options (A or B), which is better? [Problem 5 Suppose one machine, A, executes a program with an average CPI of 2.1. Suppose another machine, B (with the same instruction set and an enhanced compiler), executes the same program with 25% less instructions and with a CPI of 1.7 at 800MHz. In order for the two machines to have the same performance, what does the clock rate of the first machine (machine A) need to be