A) supply node is one where the total flow into the node is less than the total flow out of the node
B) A transshipment node is one where the total flow into the node equals the total flow of the node
C) The flow balance for a demand node should show a positive RHS value
D) The flow balance for a transshipment node should show a negative RHS value
E) The flow balance for a supply node should show a negative RHS value