A GraphThis is a graphical representation of combination of real output and price level on X and Y axis showing 4 different lines line A perpendicular to Y axis line B upward sloping and line C parallel to X axis and line D downward sloping. Refer to the above diagram relating to short-run and long-run aggregate supply. The Multiple Choice long-run aggregate supply curve is B. short-run aggregate supply curve is A. short-run aggregate supply curve is B. long-run aggregate supply curve is D