Which Balance of Flow Rule Should Be Applied at Each $\le$

Multiple Choice

Which balance of flow rule should be applied at each node in a network flow problem when Total Supply > Total Demand?

A) Inflow - Outflow $\le$ Supply or Demand
B) Inflow - Outflow $\ge$ Supply or Demand
C) Inflow - Outflow = Supply or Demand
D) Inflow - Supply $\ge$ Outflow or Demand