In new Keynesian theory, the pattern of inflation exhibited by an economy with growing aggregate demand known as inflation dynamics is A. initially speedy upward adjustment of the price level and inflation in response to higher aggregate demand followed by higher inflation in the future O B. initially speedy upward adjustment of the price level and inflation in response to higher aggregate demand followed by lower inflation in the future C. initially sluggish downward adjustment of the price level and inflation in response to higher aggregate demand followed by lower inflation in the future O D. initially sluggish upward adjustment of the price level and inflation in response to higher aggregate demand followed by higher inflation in the future