To Formulate a Transshipment Problem as a Linear Program Similar

To formulate a transshipment problem as a linear program similar to the transportation problem,transshipment points must:

A) equate the total input into each of them to the total output from them.
B) equate (balance) total cost of shipping to each of them to the total cost of shipping output from them.
C) ensure total input to all of them is less than the total supply available.
D) ensure total input to all of them is sufficient for the total demand of destinations.
E) balance shipments so that each transshipment point receives and ships an equal quantity.