The Network Model Representation of the Transportation Problem Has the Following

Multiple Choice

The network model representation of the transportation problem has the following advantage relative to the special case of a simple transportation model:

A)  it does not require capacity restrictions on the arcs of the network 
B)  the flows in the network model don't all necessarily have to be from supply locations to demand locations 
C)  a network model representation is generally easier to formulate and solve 
D)  All of these options