Q$6$: Consider the computer with three instruction classes and CPI measurements as in the following table: A CPI $1$ CPI for this instruction class B $23$ Now suppose we measure the code for the same program from two different compilers and obtain the following data: Instruction counts $($in billions$)$ for each instruction class Code from Compiler $15$ Compiler $21011$ C $11$ Assume that the computer's clock rate is $4$ GHz$.($a$)$ Which compiler will execute faster according to CPU execution time? $($b$)$ Which compiler will execute faster according to MIPS?