The Flow Balance Constraint for Each Transshipment Node,in a Minimum $\geq$

Multiple Choice

The flow balance constraint for each transshipment node,in a minimum cost network flow model,takes the form

A) Flow in
$\geq$ Flow out + Net supply
B) Flow out
$\geq$ Flow in + Net supply
C) Flow in = Flow out
D) Flow out
$\leq$ Flow in + Net supply
E) Flow in
$\leq$ Flow out + Net demand