According to the extended AD-AS model, the U.S. growth experience is most accurately described as which of the following? Multiple choice question. A leftward shift in both the long-run aggregate supply (AS) and aggregate demand (AD) curves A rightward shift in the long-run aggregate demand (AD) curve and a leftward shift in the short-run aggregate supply (AS) curve A rightward shift in the short-run aggregate supply (AS) curve and a leftward shift in the long-run aggregate demand (AD) curve A rightward shift in both the long-run aggregate supply (AS) and aggregate demand (AD) curves