Consider two different implementations, $M1$ and $M2,$ of the same instruction set. There are three classes of instructions $($A$,$ B$,$ and C$)$ in the instruction set. M$1$ has a clock rate of $80MHz$ and M$2$ has a clock rate of $100MHz.$ The average number of cycles for each instruction class and their frequencies $($for a typical program$)$ are as follows:

$\backslash$table$[[$Instruction Class,$\backslash$table$[[$M$1-$Cycles per$],[$instruction$]],\backslash$table$[[$M$2-$Cycles per$],[$instruction$]],$Instruction Frequency$],[$A$,1,2,60\%$