Consider a computer that runs Virtual Machines $($VMs$).$ Any number of VMs can run on the native computer or on other VMs$.$ When multiple VMs are running on a given platform, they share the available CPU throughput equally. The overhead of each VM is $25\%$ of the allocated throughput. The computer is currently running the following configuration: five $(5)$ VMs $($A$,$ B$,$ C$,$ D and E$)$ are running on the native CPU. On VM B$,$ there are three $(3)$ VMs running $($B$-1,$ B$-2,$ and B$-3).$ Given that program X runs in k seconds on the B$-3$ VM$,$ what is its expected runtime of program X on the native CPU? Justify your answer.