While Africa has the largest numbers of working children, Asia has the highest proportion of working children, with an estimated one in four employed

An open economy

A) can save only by building up its capital stock. B) can save only by acquiring foreign wealth. C) cannot save either by building up its capital stock or by acquiring foreign wealth. D) can save either by building up its capital stock or by acquiring foreign wealth. E) can save by avoiding excessive imports.

In the long run, persistent inflation in the United States is caused by

A) leftward shifts in both the long-run aggregate supply curve and in the aggregate demand curve. B) rightward shifts in the long-run aggregate supply curve and the leftward shift of the aggregate demand curve. C) a faster rightward shift of the aggregate demand curve than the rightward shift of the long-run aggregate supply curve. D) leftward shifts in the aggregate demand curve while the position of the long-run supply curve is unchanged.