In a Minimum Cost Network Flow Model, the Flow Balance

Multiple Choice

In a minimum cost network flow model, the flow balance constraint for each supply node takes which form?

A) Net Inflow = Demand
B) Net Inflow ≥ Demand
C) Net Inflow=0 (equivalent to Net Outflow=0)
D) Net Outflow ≤ Capacity
E) Net Outflow > Capacity