The best choice that describes the feasible region in a graph for systems of inequalities. * 7 points
A The intersection of two lines in the coordinate plane which shows a single solution for 2 equations.
B The area of the graph showing all the possible points that satisfy all constraints.
C Two or more linear equations with the same variable(s) working together.
D Restrictions, limitations or boundaries that need to be placed upon variables used in equations that model real-world situations.