What Must Be Done in Order to Identify the Feasible

Multiple Choice

What must be done in order to identify the feasible region in a decision-variable plane?

A) Graph has to be plotted for all non-binding constraints.
B) Objective function contours are to be plotted.
C) Graph has to be plotted for all constraints with strict equality.
D) Appropriate equations are to be solved simultaneously.
E) One of the constraint functions is to made binding.