The northwest$-$corner rule is best used

Question $20$ options:

A$)$

to generate an initial feasible solution to a transportation problem.

B$)$

to calculate how much to transfer from one shipping route to another.

C$)$

to calculate whether a feasible solution is also an optimal solution.

D$)$

to resolve cases of degeneracy in transportation problems.

E$)$

to minimize the total shipping cost from several origins to several destinations.