Consider two different implementations of the same instruction set architecture. There are three classes of instructions, A, B, and C. The clock rate and CPI of each implementation are given in the following table. Given a program generates code with 4 billion Class A instructions, 1 billion Class B instructions, and 2 billion Class C instructions. Processor Clock Rate CPI Class A CPI Class B CPI Class C P1 2 GHz 1 2 3 P2 4 GHz 2 4 2 1. What is the global CPI for each implementation? . Which implementation is faster according to MIPS