A graph of P versus Y shows a straight line, AD, decreasing linearly, a vertical line, LRAS, extending from the horizontal axis at Y1, a straight line, SRAS1, increasing linearly, and a straight line, SRAS2, increasing linearly to the right and parallel to SRAS1. Values P1, P2, and P3 are marked on the vertical axis, from highest to lowest. Values Y1 and Y2 are marked on the horizontal axis, from smallest to largest. Point A is marked on the intersection of AD, LRAS, and SRAS1 at (Y1, P1). Point B is marked on the intersection of AD and SRAS2 at (Y2, P2). Point C is marked on the intersection of LRAS and SRAS2 at (Y1, P3). Points A and C are at the same output level, Y1. The shift of the short-run aggregate-supply curve from SRAS1 to SRAS2.