Consider two different implementations of the same instruction set architecture. There are four classes of instructions: A$,$ B$,$ C$,$ and D$.$ The clock rates and instruction class CPIs for each implementation are provided in the table below: Given a program with $10\backslash$times $10^9$ instructions that has the following distribution of the instruction classes: $40\%$ of class A$,10\%$ of class B$,40\%$ of class C$,$ and $10\%$ of class D$.$ Determine which implementation will execute the above program faster?