After testing each unused cell by the stepping-stone method in the transportation problem and finding only one cell with a negative improvement index
A)once you make that improvement, you would definitely have an optimal solution.
B)you would make that improvement and then check all unused cells again.
C)you could stop because you already had the optimal solution.
D)you should check to be sure that you don't have to add a dummy source or dummy destination.

Question

Quizplus · Accepted Answer

Making the improvement in the cell with negative improvement index may not necessarily result in an optimal solution. It is possible that other negative improvement index cells become available and need to be checked again. Therefore, after making the improvement, it is important to check all unused cells again to ensure that the solution is indeed optimal.

After Testing Each Unused Cell by the Stepping-Stone Method in the Transportation