Consider two different implementations of the same instruction set architecture. The instructions can be divided into four classes according to their CPI (classes A,B,C, and D ). P1 with a clock rate of 2.5GHz and CPIs of 1,2,3, and 3, and P2 with a clock rate of 3GHz and CPIs of 2,2,2, and 2. a. Given a program with a dynamic instruction count of 1.0E6 instructions divided into classes as follows: 10% class A, 20% class B, 50% class C, and 20% class D, which is faster: P1 or P2? (5 marks) b. What is the global CPI for each implementation? (5 marks) c. Find the clock cycles required in both cases