Q$6$: Consider the computer with three instruction classes and CPI measurements as in the following table:

$\backslash$table$[[,$CPI for this instruction class$],[$A$,$B$,$C$],[$CPI$,1,2,3]]$

Now suppose we measure the code for the same program from two different compilers and obtain the following data:

$\backslash$table$[[,\backslash$table$[[$Instruction counts $($in billions$)],[$for each instruction class$]]],[$A$,$B$,$C$],[$Compiler $1,5,1,1],[$Compiler $2,10,1,1]]$

Assume that the computer's clock rate is $4GHz.$

$($a$)$ Which compiler will execute faster according to CPU execution time?

$($b$)$ Which compiler will execute faster according to MIPS?