In the late 1990s, the United States experienced substantial economic growth with low inflation. Put differently, real GDP rose while the aggregate price level stayed approximately the same. This means, Select one: A. the AD curve shifted inward and the SAS curve shifted outward. B. the AD and SAS curves shifted outward at the same time. C. the SAS curve shifted outward first, then the AD curve. D. the AD curve shifted outward first, then the SAS curve. E. potential GDP expanded first, then the LAS curve followed